★Natural Hazards
Grade 4 Science Worksheet - Challenge Me
NameDate
Circle the answer.
Clearing brush near homes costs little but must be done every year. Fire-safe roofs cost a lot but last for decades. Which comparison is fair?
- Roofs cost less and need yearly work.
- Brush clearing costs less now; roofs last longer.
- Both cost the same and last the same.
- Brush clearing lasts for decades.
A town builds homes right at the edge of a river that floods often. What harm could this plan cause?
- Mud from a hillside could bury the homes.
- Lava could flow toward the homes.
- Shaking could split the homes apart.
- Rising water could ruin homes and force families out.
Students poured the same water on three model slopes. How much less soil slid on grass than on bare soil?
- 80 g
- 55 g
- 25 g
- 105 g
A town in a dry, windy area wants to protect homes from wildfire. Which plan works best?
- plant tall grass around each house
- clear dry plants and use roofs that do not burn
- stack firewood against the walls
- build wooden fences that touch the houses
