Year 9 Natural Hazards Baseline

What is a volcano? 

• a chemical reaction that produces fire
• a valley under the ocean
• an atmospheric condition
• an opening in Earth’s crust

What measures the waves of earthquakes?

• seismic wave
• seismograph
• seismology
• a scientist

What is a huge wave made by an underwater earthquake?

• hurricane
• tsunami

Which can result from the earthquakes and volcanic eruptions?

• glaciation
• erosion
• precipitation
• formation of mountains

How can some of the impacts of earthquakes be reduced?

• by building structures that can sway with the motion

• by building structures that do NOT move with the motion

• by using thermometers to measure ground temperatures

• by using satellites to monitor warning buoys in the ocean

what can scientists measure to help predict when a volcano might erupt?

• temperatures of lava flows

• lengths of nearby fault lines

• small earthquakes and gases in the air near the volcano

• increases in severe weather

Which of these is the result of erosion by gravity?

• a rock arch

• a landslide

• a sand dune

• a fossil layer

Why are tsunamis dangerous?

• They cannot be detected.

• They increase in height near the shore.

• They cause earthquakes on land.

• They are very tall in the deep ocean.

During a volcanic eruption, _____ can cause damage.

• ash flow
• lava 
• tephra
• all of the above 

Which is true of natural hazards?

• Most natural hazards can be prevented.
• It is impossible to prepare for a natural hazard.
• Most tsunami damage happens far inland.
• Many natural hazards are caused by weather.