benchmark 5th grade unit 8

What causes a tsunami to form under the ocean?

• An underwater earthquake

• A volcanic eruption

• A strong wind

• A meteor impact

How do tsunami waves behave in the deep ocean compared to near the shore?

• They move faster and appear smaller in the deep ocean.

• They move slower and appear larger in the deep ocean.

• They move at the same speed and size in both areas.

• They stop moving in the deep ocean.

What was a significant factor in the high death toll of the 2004 tsunami?

• Lack of a warning system in the Indian Ocean

• The time of day it occurred

• The size of the earthquake

• The location of the earthquake

What advancements have been made to help reduce the loss of life from tsunamis today?

• Tsunami-warning systems and satellite tracking

• Building stronger homes

• Evacuation drills

• Improved weather forecasting

What happens to tsunami waves as they approach land?

• They slow down and grow taller.

• They speed up and grow shorter.

• They disappear completely.

• They remain unchanged.