Grade 4 Earth science worksheet on the four main agents of erosion: water, wind, ice, and gravity. Learners correct grammar in sentences about rivers, deserts, glaciers, and landslides, then fill in vocabulary like glacier and gravity. Short answers explain how glaciers carve valleys and why deserts experience strong wind erosion. Students learn how rivers carve valleys, wind sculpts desert dunes, and glaciers shape landscapes in this Grade 4 hands-on worksheet today.
Style:
Earth's Changing Surface
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
Rivers carries sediment downstream and shape wide valleys over time.
Rewrite: Rivers carry sediment downstream and shape wide valleys over time.
2. Fix the sentence:
Wind erosion in a desert form tall sand dunes from loose grains.
Rewrite: Wind erosion in a desert forms tall sand dunes from loose grains.
3. Fix the sentence:
Glaciers slowly carves U-shaped valleys as they move down mountains.
Rewrite: Glaciers slowly carve U-shaped valleys as they move down mountains.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A river cutting deeper into its channel is an example of water erosion.
2. Sand dunes in deserts are shaped mostly by wind erosion.
3. A slowly moving sheet of frozen water that carves valleys is called a glacier.
4. When loose rocks slide down a steep slope, the agent of erosion is gravity.
Part C: Short Answer
Answer each question in one or two complete sentences.
1. Describe how a glacier shapes the land as it moves downhill.
A glacier is a thick river of ice that drags rocks frozen into its base. As it slides, those rocks scrape and gouge the ground, carving wide U-shaped valleys and leaving piles of sediment when the ice melts.
2. Why is wind erosion stronger in deserts than in forests?
Deserts have few plants and dry, loose sand, so wind picks up grains easily. Forests have many trees and roots that hold soil in place and slow the wind, so wind erosion is much weaker there.
Earth's Changing Surface
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
Rivers carries sediment downstream and shape wide valleys over time.
Rewrite: Rivers carry sediment downstream and shape wide valleys over time.
2) Fix the sentence:
Wind erosion in a desert form tall sand dunes from loose grains.
Rewrite: Wind erosion in a desert forms tall sand dunes from loose grains.
3) Fix the sentence:
Glaciers slowly carves U-shaped valleys as they move down mountains.
Rewrite: Glaciers slowly carve U-shaped valleys as they move down mountains.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) A river cutting deeper into its channel is an example of water erosion.
2) Sand dunes in deserts are shaped mostly by wind erosion.
3) A slowly moving sheet of frozen water that carves valleys is called a glacier.
4) When loose rocks slide down a steep slope, the agent of erosion is gravity.
★ Part C: Short Answer
Answer each question in one or two complete sentences.
1) Describe how a glacier shapes the land as it moves downhill.
A glacier is a thick river of ice that drags rocks frozen into its base. As it slides, those rocks scrape and gouge the ground, carving wide U-shaped valleys and leaving piles of sediment when the ice melts.
2) Why is wind erosion stronger in deserts than in forests?
Deserts have few plants and dry, loose sand, so wind picks up grains easily. Forests have many trees and roots that hold soil in place and slow the wind, so wind erosion is much weaker there.
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9 Questions
15-20 minutes
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