Observing Changes to Land and Water

Free sample questions, a clear explanation, and 5 practice skills with an AI tutor that guides without giving the answer away.

Sample questions

1. When water flows over a dirt hill, what can it take with it?

✓ Small pieces of dirt and tiny rocks.

○ Only big trees.

○ Nothing at all.

○ Only air bubbles.

Answer: Small pieces of dirt and tiny rocks. — Think about what you see in muddy water after rain.

2. What do we call it when water carries away soil and small rocks from one place to another?

○ Growing.

✓ Erosion.

○ Planting.

○ Building.

Answer: Erosion. — It's a special science word for when land moves.

3. After a big rain, you might see muddy water flowing in a ditch. What does the mud tell us?

○ The water is very clean.

○ The water is getting colder.

○ The water is making new rocks.

✓ The water has picked up soil from the land.

Answer: The water has picked up soil from the land. — Where did the brown color in the water come from?

Observe and describe how water can move soil and small rocks (basic erosion).
Conduct a simple experiment to demonstrate how flowing water can change a landscape.
Identify human activities that can change landforms (e.g., building roads, digging).
Identify human activities that can change water forms (e.g., building dams, polluting).
Propose ways people can protect land and water forms from harmful changes.

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