Rapid Changes to Earth's Surface

Landslides are a fast change to the surface of Earth. Different conditions can make

materials move down a hill in a landslide at different rates of speed.

Which conditions can not change the speed of a landslide?

• Steepness of the slope

• Amount of water

• Type of material

• Size of fault line

What are the effects of earthquakes on Earth’s surface? Choose TWO correct

answers.

• increase plant growth

• damage to buildings

• severe storms

• change in water flow

• wind damage and erosion

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Which of the following BEST describes a landslide?

• Water flowing quickly and moving rocks

• A sudden break and movement in Earth’s crust

• Mud moving quickly down a hill

• Lava turning into new rock

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Look at the images and read the sentences below.

When ________ occurs, a large amount of rock or material moves down a slope,

changing the shape of the rock and land.

When _______ occurs, hot lava is released and flows over Earth’s surface, then cools

and hardens to form new rock.

When _________ occurs, the surface of Earth cracks and shifts, and the ground rises and

falls.

Which words, in order, correctly complete these sentences?

• a volcanic eruption; a landslide; an earthquake

• a landslide; a volcanic eruption; an earthquake

• a volcanic eruption; an earthquake; a landslide

• a landslide; an earthquake; a volcanic eruption

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Students are using a shake table to model earthquake effects.

• How tall buildings should be

• What causes earthquakes

• How buildings respond to earthquake shaking

• Where earthquakes happen most often

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During a volcanic eruption, you observe through a safe webcam that the volcano produces a tall ash cloud.

What immediate effect will this have on the surrounding area?

• Flooding

• Ash covering the ground

• Ocean waves

• Ground shaking

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How are earthquakes and volcanic eruptions the same?

Select TWO correct answers.

• They both happen quickly.

• They both release magma.

• They both make mountains.

• They both move soil down a hill.

• They both change the Earth's surface.

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You are creating a diagram model of a landslide.

Which elements must your model include to accurately show why landslides occur?

Select TWO correct answers.

• Layers of different types of rock and soil

• Trees and plants on the surface

• Angle of the slope

• Time of day

• Weather conditions

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Which of the statements about a volcano are NOT true? Select TWO answers.

• Volcanoes can build new land.

• Volcanoes build land slowly over a few years.

• Volcanoes can always happen as a result of an earthquake.

• Volcanoes change the land around them quickly.

• Volcanoes erupting can expel fumes, ashes, and lava.

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All of the following statements about landslides are true EXCEPT —

• landslides are the movement of rock, debris or Earth down a slope which is driven by the

  force of gravity.

• landslides can occur in a matter of seconds, changing the surface of the land.

• landslides rarely cause any damage because they only occur in locations with few people.

• landslides can be caused by nature or humans.

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