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It describes chlorophyll as the green pigment that absorbs sunlight and dominates in summer, then shows how shorter days reduce chlorophyll so hidden pigments become visible. The text covers carotenoids for yellows and oranges and anthocyanin for reds and purples, noting influences like sunny days, cool nights, and cloudy or warm rainy weather. It also explains leaf drop through a corky layer that seals and snips leaves loose, helping trees conserve water and survive winter.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/why-leaves-change-color-solve-each-problem-488069/488069/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/why-leaves-change-color-solve-each-problem-488069/488069.png","ImageObject",300,407,{"name":92,"@type":93},"moss~","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-05","2026-09-30",true,{"@type":102,"interactionType":103,"userInteractionCount":34},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What does chlorophyll do for a tree?","Question",{"text":112,"@type":113},"Chlorophyll soaks up sunlight and helps the tree make its food. It is so plentiful that it covers up other colors during summer.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What causes leaves to stop looking green in fall?",{"text":117,"@type":113},"Shorter days bring less sunlight, so the tree slows down and stops making chlorophyll. The green fades, revealing other pigments.",{"name":119,"@type":110,"acceptedAnswer":120},"Why are some autumns brighter than others?",{"text":121,"@type":113},"Sunny days and cool nights help trees pump out extra red. 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You crunch through a pile of them on your way to school, and the whole street smells like autumn. Buthere's a puzzle: those bright colors didn't just appear out of nowhere. Some of them were hiding inside the leaves all summer long!  \nTo understand that hiding trick, you first have to meet the busiest worker inside every leaf. It's called chlorophyll, a green substance that soaks up  \nsunlight and helps the tree make its food. Chlorophyll is so green and so plentiful that it covers up every other color, the way a bright green marker would cover up a faint yellow one. All summer, while the tree gobbles up sunshine, that green is the only color you get to see.  \nThat green can't last forever, though, and the change begins when the days grow shorter in fall. With less sunlight, the tree slows down and stops making chlorophyll, so the green fades away. Now the colors that were there the whole time finally get their moment to shine. Yellows and oranges, made by pigments called carotenoids, are the same ones that make carrots and bananas their color.  \nYellow and orange aren't the only stars of the autumn show, because reds and purples join the party too. These come from a pigment called anthocyanin, and here's the surprise: the tree makes it fresh in the fall, not during summer. That's why some years are brighter than others, since sunny days and cool nights help trees pump out extra red. A rainy, warm autumn can leave the woods looking dull and brown instead.  \nAfter the fireworks of color come and go, the leaves finally let go and drift to the ground. The tree grows a thin, corky layer where each leaf is attached, and that seal snips the leaf loose like scissors. Dropping its leaves helps the tree save water and survive the cold, quiet winter ahead. So the next time a red leaf lands at your feet, remember that its color was waiting inside all along, just for this.  \nWhy Leaves Change Color  \nName:  \n\n| Solve each problem.\u003Cbr>Use the article to answer the question.\u003Cbr>1) What does chlorophyll do for a tree?\u003Cbr>A. It makes the tree's leaves turn red in fall.\u003Cbr>B. It soaks up sunlight and helps the tree make food.\u003Cbr>C. It stores water for the tree during winter.\u003Cbr>D. It seals off each leaf so it can drop. |  |  |  |  | Answers\u003Cbr>1.  \u003Cbr>2.  \u003Cbr>3.   |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| 2) What is the main idea of this passage?\u003Cbr>A. Leaves fall so trees can stay alive through cold winters.\u003Cbr>B. Red maple trees are the brightest trees in October.\u003Cbr>C. Autumn colors come from pigments, some hidden all along and some made in fall.\u003Cbr>D. Trees turn green in summer to make food from sunlight. |  |  |  |  | 4.  \u003Cbr>5.  \u003Cbr>6.  \u003Cbr>7.   |  |  |  |  |  |\n| 3) What causes a tree to stop making chlorophyll?\u003Cbr>A. The tree grows a corky layer at each leaf.\u003Cbr>B. The days grow shorter and there is less sunlight.\u003Cbr>C. Rain and warm nights arrive in the fall.\u003Cbr>D. The tree needs to save water for winter. |  |  |  |  | 8.  \u003Cbr>9.  \u003Cbr>10.   |  |  |  |  |  |\n| 4) Why does a tree drop its leaves in autumn?\u003Cbr>A. It lets the tree turn its leaves red and purple.\u003Cbr>B. It helps the tree make more chlorophyll in spring.\u003Cbr>C. It helps the tree save water and survive the winter.\u003Cbr>D. It helps the leaves soak up more sunlight. |  |  |  |  |  |  |  |  |  |  |\n| 5) How does a leaf finally come loose from the tree?\u003Cbr>A. The tree pushes water into the leaf until it drops.\u003Cbr>B. The green chlorophyll dries up and lets it fall.\u003Cbr>C. The wind rips the leaf off during a cold storm.\u003Cbr>D. A thin, corky layer seals the leaf and snips it free. |  |  |  |  |  |  |  |  |  |  |\n| 6) According to the passage, why do we only see green leaves in summer?\u003Cbr>A. Trees only make yellow pigments in the winter.\u003Cbr>B. Anthocyanin has not been made by the tree yet.\u003Cbr>C. Sunlight burns away the reds and ","cbCaiaJU6uQXNz10","https://ap.wps.com/l/cbCaiaJU6uQXNz10","pdf",99453,"English","# Why Leaves Change Color\n## Chlorophyll and Summer Green\n## Pigments Behind Autumn Colors\n## Leaf Drop and Tree Survival\n## Comprehension Questions","[{\"question\":\"What does chlorophyll do for a tree?\",\"answer\":\"Chlorophyll soaks up sunlight and helps the tree make its food. It is so plentiful that it covers up other colors during summer.\"},{\"question\":\"What causes leaves to stop looking green in fall?\",\"answer\":\"Shorter days bring less sunlight, so the tree slows down and stops making chlorophyll. The green fades, revealing other pigments.\"},{\"question\":\"Why are some autumns brighter than others?\",\"answer\":\"Sunny days and cool nights help trees pump out extra red. A rainy, warm autumn can make the woods look dull and brown instead.\"}]","Why Leaves Change Color - Solve Each Problem | PDF",1790809922,18]