Autumn WebQuest!
Directions:
-Each question links you to a new site.
-Read the information on the site to learn the answer to the question.
-Write the answer on your worksheet.
Questions:
1. What is Autumn? It's a transition between which two other seasons:
2. In the northern hemisphere, the first day of Autumn is also called the Autumnal equinox. Which 2 days can this fall on?
3. In the northern hemisphere, the last day of Autumn is also called the Winter solstice. Which 2 days can this fall on?
4. What are the natural substances produced by leaf cells that make leaf colors?
5. What color comes from chlorophyll?
6. What colors come from carotenoid?
7. What color comes from anthocyanins?
8. In the summer, both chlorophyll and carotenoids are in the leaves. Why are the leaves green instead of yellow or orange?
9. When are anchocyanins produced? Do all trees produce this pigment?
10. Leaves change color in autumn because they stop producing one of the pigments. Which pigment do they stop producing?
11. Why do trees stop producing that pigment from #10?
12. Why do the leaves fall from the trees?
13. There is a general name for trees whose leaves don't change colors during autumn. What is it?
14. Why can the needles on the trees from #13 resist freezing?
-Each question links you to a new site.
-Read the information on the site to learn the answer to the question.
-Write the answer on your worksheet.
Questions:
1. What is Autumn? It's a transition between which two other seasons:
2. In the northern hemisphere, the first day of Autumn is also called the Autumnal equinox. Which 2 days can this fall on?
3. In the northern hemisphere, the last day of Autumn is also called the Winter solstice. Which 2 days can this fall on?
4. What are the natural substances produced by leaf cells that make leaf colors?
5. What color comes from chlorophyll?
6. What colors come from carotenoid?
7. What color comes from anthocyanins?
8. In the summer, both chlorophyll and carotenoids are in the leaves. Why are the leaves green instead of yellow or orange?
9. When are anchocyanins produced? Do all trees produce this pigment?
10. Leaves change color in autumn because they stop producing one of the pigments. Which pigment do they stop producing?
11. Why do trees stop producing that pigment from #10?
12. Why do the leaves fall from the trees?
13. There is a general name for trees whose leaves don't change colors during autumn. What is it?
14. Why can the needles on the trees from #13 resist freezing?
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