Earthquakes and Volcanoes 1

The movement of Earth's plates creates enormous forces that ...

• squeeze all rocks to the inner core

• squeeze or pull you to the epicenter

• squeeze or pull the rock in the crust

• happen every single day on mars

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What is stress?

• A force that makes the earth very upset

• A force that acts on buildings/skyscrapers

• Forces that can't change the shape or volume on Earth

• A force that acts on rock to change its shape or volume

How many kinds of stress can occur in Earth's crust?

• 7

• 3

• 2

• 5

One kind of stress is tension that...

• pulls on the crust

• stretches rock so it becomes thinner in the middle

• squeezes rocks

• stretches and pushes rock further away

Compression is...

• when rocks are pushed together

• pressing two rocks together

• squeezes rock until it folds or breaks

• when no stress occurs

Shearing will..

• pushes a mass of rocks in the same direction

• push a mass of rock in two opposite directions

• causes masses of rock to slip

• cause stress to increase by five times the amount

What is uplift?

• a break in a body of rock along which one block slides relative to another

• stress that pushes rock together.

• when parts of Earth’s crust rise to higher elevations.

• when parts of the crust sink to lower elevations.

Tags

NGSS.MS-ESS2-2

What is compression?

• a break in a body of rock along which one block slides relative to another

• stress that pushes rock together.

• when parts of Earth’s crust rise to higher elevations.

• stress that occurs when forces act to squeeze an object

What is tension?

• a break in a body of rock along which one block slides relative to another

• stress that pushes rock together.

• when parts of Earth’s crust rise to higher elevations.

• stress that occurs when forces act to stretch an object

What is folding?

• a break in a body of rock along which one block slides relative to another

• the bending of rock layers due to stress

• when parts of Earth’s crust rise to higher elevations.

• stress that occurs when forces act to stretch an object