Vocabulary
A mountain-like structure that can erupt and lava can flow out of it.
What is a volcano?
How would you describe a volcanic explosion?
A volcanic eruption is when lava flows out of the top of a volcano. The lava may run down the side or it can shoot up into the air. When the lava cools, it hardens into rock.
Describe an earthquake.
During an earthquake the ground shakes. Sometimes things fall off shelves or out of cabinets if the earthquake is strong.
What 2 things cause erosion?
Wind and water
Where is the largest volcano?
A natural event that happens when the ground shakes.
What is an earthquake?
What does it mean when a volcano is active?
Active means that there is regular activity and the volcano could explode.
How can an earthquake be destructive?
An earthquake can cause cracks in the ground, roads can break into pieces. Bridges and buildings can fall.
True or false.
Erosion caused the Grand Canyon
What is true?
True or False
Erosion happens quickly.
False.
Erosion happens very slowly.
When tiny pieces of the Earth’s surface are moved from one place to another. This usually happens due to wind or flowing water
What is erosion?
The two types of volcanos.
What is composite and shield?
True or false.
The ground beneath us is always moving.
What is true?
How does a rough rock turn smooth?
Over very long periods of time weathering and erosion from wind or water can make a rough rock smooth.
Describe a landslide.
A landslide is when heavy rain soaks into the Earth and causes the land to fall down because of gravity. If there are no plants to hold the soil in place, it is more likely to happen.
When land, mud and rocks slide down a slope.
What is a landslide?
The name for magma once it comes out of the volcano.
What is lava?
When an earthquake happens does the ground move fast or slow?
The ground moves fast.
The breakdown of rocks along the coast by the ocean.
What is weathering?
How did the Grand Canyon form?
Over millions of years, the Colorado River has worn away rock to form the Grand Canyon. Even today, it continues to change very slowly. Wind has also helped form the Grand Canyon, but not as much as water.
A huge piece of ice that slowly moves.
What is a glacier?
Other than land, where do volcanos occur?
Underwater on the ocean floor, under ice caps and in outer space on planets and moons
The strongest point of an Earthquake
Weathering of rocks by ocean waves can form ________.
What are cliffs?
What are earthquakes and volcanos?