What is the crust made of?
Broken pieces called plates
One big solid piece
What happens to tsunami waves near land?
They suck up water and grow taller and wider
They get smaller and disappear
How tall can some tsunamis be when they hit shore?
As tall as a tree
As tall as a ten-story building
Can we feel the Earth's plates moving?
No
Yes, all the time
What do shock waves cause when they reach the surface?
A thunderstorm
An earthquake
How do tsunami waves start out at sea?
Small
Huge
What is the Earth's surface called?
The mantle
The crust
What can happen when plates move?
Chunks of rock can explode and cause shock waves
The plates turn into lava
Where do shock waves begin?
On the Earth's surface
Deep underground at the focus
What is a tsunami?
A giant ocean wave
A small rain shower
What machine tells us how strong an earthquake is?
A thermometer
A seismograph
What is the earthquake’s epicenter?
The bottom of the ocean
The place on Earth’s surface right above the focus
What can happen if an earthquake happens underwater?
It makes it snow
It can cause a tsunami
Where do people feel the earthquake the most?
At the epicenter
Far away from the epicenter
How do the plates move?
They slide and pull away slowly
They jump up and down quickly
What can some earthquakes do to buildings?
Make buildings fall down
Make buildings float