Let's solve the worksheet titled
"Humans cause change" from K5 Learning. The task is to determine whether each described change is
natural or
human-caused.
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Instructions:
For each change, write
natural or
human-caused.
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1. A dam stops a river from flowing and forms a lake.
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Explanation: Dams are built by humans to control water flow, generate electricity, or store water.
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Answer: human-caused
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2. An earthquake causes big rocks to fall.
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Explanation: Earthquakes are natural events caused by tectonic plate movements. They occur without human intervention.
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Answer: natural
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3. The wind blows sand into large sand dunes.
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Explanation: Wind is a natural force that shapes landscapes over time. Sand dunes form naturally through wind erosion and deposition.
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Answer: natural
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4. All the trees on a hillside are cut down.
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Explanation: Trees are cut down by humans for logging, agriculture, or construction.
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Answer: human-caused
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5. Large areas are cleared of plants to make space for farming.
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Explanation: Clearing land for agriculture is a direct result of human activity.
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Answer: human-caused
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6. Canals are built to bring water to dry desert areas.
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Explanation: Canals are man-made structures designed to transport water. They are constructed by humans.
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Answer: human-caused
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7. A river weathers cliffs into canyons.
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Explanation: Rivers slowly erode rock over long periods through natural processes like water flow and weathering.
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Answer: natural
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✔ Final Answers:
1. A dam stops a river from flowing and forms a lake. →
human-caused
2. An earthquake causes big rocks to fall. →
natural
3. The wind blows sand into large sand dunes. →
natural
4. All the trees on a hillside are cut down. →
human-caused
5. Large areas are cleared of plants to make space for farming. →
human-caused
6. Canals are built to bring water to dry desert areas. →
human-caused
7. A river weathers cliffs into canyons. →
natural
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This worksheet helps students understand how both natural forces and human actions shape the environment.
Parent Tip: Review the logic above to help your child master the concept of environment worksheet.
