Natural Selection

22 Feb

Directions for Gizmo:

A. Open the following in a New Window or New Tab:

www.explorelearning.com

http://pmcsscience3.wordpress.com/2011/02/22/natural-selection/#respond

B. Use the following username: secondp112

password: cow864

C. Scroll Down to “Leave a Comment” and right-click to Open in New Tab

D. Proceed to answer questions below.

 

1. Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

A. How many dark moths did you capture? _______

B. How many light moths did you capture? _______

C.  Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? ____________

2. If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? ____________________________________________________________

How many moths can you find?

Activity A:  Light trees Get the Gizmo ready:  • Click Reset. • Check that the LIGHT TREES tab is selected. Introduction: Before the 19th century in England, the air was very clean. The bark on trees was usually light in color. Abundant lichens growing on tree trunks also lightened their appearance.

Question: How does the color of a peppered moth affect survival?

1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? ____________________________________________________________________ 2.

Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

Year Dark moths Light moths 0   1   2   3   4   5

3. Analyze: What do your results show? ___________________________________________  _________________________________________________________________________4. Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? _________________________________________________

5. Extend your thinking: What strategies did you use to hunt for moths?

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14 Responses to “Natural Selection”

  1. lifaite February 23, 2011 at 5:45 pm #

    chris thomas christhomas647@yahoo.com light moths captured=9 dark moths captured=9 light moths camouflauge better on white trees. i would most commonly see dark moths than light.most likely you would be able to see more dark moths than you would be able to see light ones.40 light moths 100%.i think dark moths was more common.mad mouse clicking strategies and by observing the backgrounds and the color moths

  2. Lew Sterling Jr. February 23, 2011 at 6:19 pm #

    1. Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

    A. How many dark moths did you capture? ___5___

    B. How many light moths did you capture? __4____

    C. Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? ___light__

    2. If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? _______dark____________________________________________

    How many moths can you find? 9

    Question: How does the color of a peppered moth affect survival? to avoid getting “eaten.”

    1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? it will be random_____________________________________ 2.

    Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

    Year Dark moths Light moths 0 1 2 3 4 5

    3. Analyze: What do your results show? they were random____________________ _________________________________________________________________________
    4. Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? ____i saw more light than dark; 11:21 “light to dark”

    5. Extend your thinking: What strategies did you use to hunt for moths
    “Think like a moth.”

  3. jalil muhammad February 23, 2011 at 6:35 pm #

    q1.6
    a.0
    b.light
    q2.dark
    q3.20
    q4. the dar ones will be found the fastes
    q5.dark-40% light-60%
    q6light

  4. Amber Manuel February 23, 2011 at 6:40 pm #

    Assessment Question Answers:
    1.4
    2.3
    3.Light
    4.Light
    5.Dark moths will decrease & light moths will increase.
    6.The population of the light moths on the light tree is higher than the dark moths.
    7.Light
    8.I look for the color & the pattern of the moth’s wings.

  5. bianca foster February 23, 2011 at 6:46 pm #

    . Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

    A. How many dark moths did you capture? ___17____

    B. How many light moths did you capture? ____8___

    C. Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? __light__________

    2. If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? ___there will be more dark than light months ______

    How many moths can you find?

    Activity A: Light trees Get the Gizmo ready: • Click Reset. • Check that the LIGHT TREES tab is selected. Introduction: Before the 19th century in England, the air was very clean. The bark on trees was usually light in color. Abundant lichens growing on tree trunks also lightened their appearance.

    Question: How does the color of a peppered moth affect survival?

    1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? ____the light moth population will be higher than the dark because of the light will be safe from predators___________________________________________________ 2.

    Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

    Year Dark moths Light moths 0 1 2 3 4 5

    3. Analyze: What do your results show? ___________________________________________ _________________________________________________________________________4. Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? ____dark moths___

    5. Extend your thinking: What strategies did you use to hunt for moths?

  6. Tyler Harris February 23, 2011 at 6:47 pm #

    Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

    A. How many dark moths did you capture? ____7___

    B. How many light moths did you capture? ____0___

    C. Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? ______light Moth______

    If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? __________light moth__________________________________________________

    How many moths can you find?

    Activity A: Light trees Get the Gizmo ready: • Click Reset. • Check that the LIGHT TREES tab is selected. Introduction: Before the 19th century in England, the air was very clean. The bark on trees was usually light in color. Abundant lichens growing on tree trunks also lightened their appearance.

    Question: How does the color of a peppered moth affect survival? It helps the moth blend in with its surroundings and hide from preditors.

    1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? _light moths will blend in with the light trees and hide from predetors. dark moths will be detected easily
    ___________________________________________________________________ 2.

    Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

    Year Dark moths Light moths 0 1 2 3 4 5

    3. Analyze: What do your results show? _____percentege of moth showed in what year______________________________________ _________________________________________________________________________4. Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? __light color moth_______________________________________________

    5. Extend your thinking: What strategies did you use to hunt for moths?
    spacebar and fast clicking

  7. Marcos Gutierrez February 24, 2011 at 5:32 pm #

    1.A correct:A 2.D corect:D 3.C corect:C 4.C corect:A 5.D corect:D

  8. priest cherry February 24, 2011 at 5:42 pm #

    1. Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

    A. How many dark moths did you capture? zero

    B. How many light moths did you capture? zero

    C. Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? a light moth

    2. If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? light moths
    How many moths can you find? a lot

    Activity A: Light trees Get the Gizmo ready: • Click Reset. • Check that the LIGHT TREES tab is selected. Introduction: Before the 19th century in England, the air was very clean. The bark on trees was usually light in color. Abundant lichens growing on tree trunks also lightened their appearance.

    Question: How does the color of a peppered moth affect survival? its camo

    1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? they will die out
    2.Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

    Year Dark moths Light moths 0 1 2 3 4 5

    3. Analyze: What do your results show? an equal # 4.Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? light moths 5. Extend your thinking: What strategies did you use to hunt for moths?
    clarity and focus

  9. michael str8 dome jenkins February 24, 2011 at 5:43 pm #

    Assessment Questions (5):
    1.Which of the following statements best describes what will most likely occur to the moth populations in the image below?

    A. The light moths will be captured by predators more easily than the dark moths, and the population of dark moths will rise.
    B. The light moths will be captured by predators more easily than the dark moths, and the population of light moths will rise.
    C. The dark moths will be captured by predators more easily than the light moths, and the dark moths will probably go extinct.
    D. The light moths will change their wing color to match that of the dark moths.
    2.What is the most likely explanation of the data shown below?

    A. There has been a drought in the area that is affecting all life forms.
    B. The population of natural predators of the moths has gotten smaller.
    C. The moths are living in an environment with light trees.
    D. The moths are living in an environment with dark trees.
    3.The pair of total population graphs below display the results of two different five-year hunting cycles, one on light trees and one on dark trees. How do these results demonstrate natural selection?

    A. The moth populations shown here demonstrate random fluctuations over time that are not explained by tree color.
    B. The moths that are a different color than the trees in their environment thrive over time due to camouflage, and their populations increase.
    C. The moths that are the same color as the trees in their environment thrive over time due to camouflage, and their populations increase.
    D. The graphs actually show a result that is opposite of what is expected from natural selection.
    4.Suppose a certain species of insect lives in the lush green canopy of the rain forest. Some of the insects are bright green in color, and some are bright yellow. Assume there is a natural predator of the insect in the area. What do you expect to happen to the populations of the green and the yellow insects over time?
    A. The green insect population will increase and the yellow insect population will decrease.
    B. The green insect population will decrease and the yellow insect population will increase.
    C. Both insect populations will remain constant over time.
    D. Both insect populations will increase over time.
    5.Natural selection can operate on predator populations as well as on prey. Suppose that over time trees became covered in lichen and the proportion of light moths increased to nearly 100%. What is the most likely consequence for predator populations?
    A. Bird populations will decrease, at least for a while.
    B. Over time, birds with better eyesight will become more common.
    C. Birds may change hunting strategies or seek other sources of food.
    D. All of the above.

  10. Roshana Harvin February 24, 2011 at 5:44 pm #

    1. Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

    A. How many dark moths did you capture? zero

    B. How many light moths did you capture? zero

    C. Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? a light moth

    2. If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? light moths
    How many moths can you find? a lot

    Activity A: Light trees Get the Gizmo ready: • Click Reset. • Check that the LIGHT TREES tab is selected. Introduction: Before the 19th century in England, the air was very clean. The bark on trees was usually light in color. Abundant lichens growing on tree trunks also lightened their appearance.

    Question: How does the color of a peppered moth affect survival? its camo

    1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? they will die out
    2.Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

    Year Dark moths Light moths 0 1 2 3 4 5

    3. Analyze: What do your results show? an equal # 4.Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? light moths 5. Extend your thinking: What strategies did you use to hunt for moths?
    clarity and focus

  11. Chris Thomas February 24, 2011 at 5:47 pm #

    1. Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

    A. How many dark moths did you capture? zero

    B. How many light moths did you capture? zero

    C. Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? a light moth

    2. If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? light moths
    How many moths can you find? a lot

    Activity A: Light trees Get the Gizmo ready: • Click Reset. • Check that the LIGHT TREES tab is selected. Introduction: Before the 19th century in England, the air was very clean. The bark on trees was usually light in color. Abundant lichens growing on tree trunks also lightened their appearance.

    Question: How does the color of a peppered moth affect survival? its camo

    1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? they will die out
    2.Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

    Year Dark moths Light moths 0 1 2 3 4 5

    3. Analyze: What do your results show? an equal # 4.Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? light moths 5. Extend your thinking: What strategies did you use to hunt for moths?
    clarity and focus

  12. Marlin Decembert February 24, 2011 at 6:15 pm #

    1. Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

    A. How many dark moths did you capture? 18

    B. How many light moths did you capture? 20

    C. Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? The light moth

    2. If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? The dark moth

    How many moths can you find? 20

    Activity A: Light trees Get the Gizmo ready: • Click Reset. • Check that the LIGHT TREES tab is selected. Introduction: Before the 19th century in England, the air was very clean. The bark on trees was usually light in color. Abundant lichens growing on tree trunks also lightened their appearance.

    Question: How does the color of a peppered moth affect survival?

    1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? The dark moth will be shown and the light moth will be camoflauge. MORE DARK MOTH

    2.

    Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

    Year Dark moths Light moths 0 1 2 3 4 5

    3. Analyze: What do your results show? Dark moth was most found in the first 2 years but in the the last 3 years light moth was found

    4. Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? Dark Moths

    5. Extend your thinking: What strategies did you use to hunt for moths? I was click the mouse to find them and i found the dark moth right away then i started to find light moths

  13. Marlin Decembert February 24, 2011 at 6:35 pm #

    1. Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

    A. How many dark moths did you capture? 18

    B. How many light moths did you capture? 20

    C. Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? The light moth

    2. If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? The light moth

    How many moths can you find? 20

    Activity A: Light trees Get the Gizmo ready: • Click Reset. • Check that the LIGHT TREES tab is selected. Introduction: Before the 19th century in England, the air was very clean. The bark on trees was usually light in color. Abundant lichens growing on tree trunks also lightened their appearance.

    Question: How does the color of a peppered moth affect survival?

    1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? The dark moth will be shown and predator will eat them and the light moth will be camoflauge and predator will not notice them . MORE LIGHT MOTH

    2.

    Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

    Year Dark moths Light moths 0 1 2 3 4 5

    3. Analyze: What do your results show? Dark moth was mostly found each year because it is noticable and light moth is camoflauge and isnt notice at all

    4. Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? Light moths
    5. Extend your thinking: What strategies did you use to hunt for moths? I was click the mouse to find them and i found the dark moth right away then so was found luckly by the light moth

  14. corey wesley February 24, 2011 at 6:48 pm #

    Natural Selection22

    Feb

    Directions for Gizmo:

    A. Open the following in a New Window or New Tab:

    http://www.explorelearning.com

    http://pmcsscience3.wordpress.com/2011/02/22/natural-selection/#respond

    B. Use the following username: secondp112

    password: cow864

    C. Scroll Down to “Leave a Comment” and right-click to Open in New Tab

    D. Proceed to answer questions below.

    1. Check that LIGHT TREES is selected. Click Start and hunt moths for one year.

    A. How many dark moths did you capture? _9______

    B. How many light moths did you capture? ____10___

    C. Camouflage is coloring or patterns that help an organism to blend in with the background. Which type of moth is better camouflaged on light bark? _____camouflaged because it can escape from the preditors._______

    2. If a forest contained mostly light-colored trees, which type of moth would you expect to be most common? __________the fourth month.__________________________________________________

    How many moths can you find?

    Activity A: Light trees Get the Gizmo ready: • Click Reset. • Check that the LIGHT TREES tab is selected. Introduction: Before the 19th century in England, the air was very clean. The bark on trees was usually light in color. Abundant lichens growing on tree trunks also lightened their appearance.

    Question: How does the color of a peppered moth affect survival?

    1. Predict: Over time, what will to happen to the populations of light and dark moths on light trees? ______the dark will servie longer.______________________________________________________________ 2.

    Experiment: Click Start and hunt peppered moths on light tree trunks for five years. In each year, try to capture as many moths as you can. (Hint: Use the spacebar on your keyboard to advance to the next tree.) After 5 years, select the TABLE tab and record the percentages of each moth type. (Note: The table shows current populations of each moth, not the number of captured moths.)

    Year Dark moths Light moths 0 1 2 3 4 5

    3. Analyze: What do your results show? ______________they mostly come in the third month._____________________________ _________________________________________________________________________4. Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color? __________________________the seventh month_______________________

    5. Extend your thinking: What strategies did you use to hunt for moths
    use the mouse to click the moths and keep swicthing trees

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