Stopping the Impact

Some earthquakes are too small for humans to experience.

• True
• False

Engineers are able to prevent all natural hazards.

• True
• False

Engineers design a wall to redirect lava away from buildings. Lava is able to burn through quickly during its first test. What is a reasonable next step?

• Build the wall taller.
• Make the wall thinner.
• Create a new material for the wall.
• Place the wall in a different location.

What type of material would be best to stop a landslide?

• material that stretches easily when pulled
• material that resists shattering when impacted
• material that does not allow water through
• material that can withstand high temperatures

What is an Earth Process

• Something that changes the Earth
• The quick way water runs downhill.
• A way to grow more food for people
• The slow way weather changes over time.

What is a quick change?

• glaciers flowing
• continents moving
• volcano erupting
• mountains moving

What is a slow change?

• earthquake
• landslide
• erosion
• tsunami

What is one engineering solution to earthquakes?

• Plate shift restrainers
• Earthquake wave inhibitors
• Seismic base isolators
• Ground movement dampeners

What does a tiltmeter measure?

• the buildup of gases
• the angle of the slope
• the movement of magma
• the amoung of airborne ash

How do tiltmeters help redict eruptions?

• Ash in the air precedes an eruption.
• Magma buildup changes the slope.
• Flowing magma is extremely volatile
• Increased gases point to an eruption.