Eathquakes and Volcanos

Question 1

A vibration caused by earthquake

Answer 1

Seismic wave

Question 2

An instrument that detects and record vibrations

Answer 2

Seismometer

Question 3

An instrument that detects and records earthquakes; shows seismic waves as curvy lines along a graph

Answer 3

Seismograph

Question 4

Bridges, buildings, and roads were wrecked because of the Earthquake

Answer 4

San Francisco

Question 5

Affected people by destroying 250 homes

Answer 5

Mount Saint Helens

Question 6

Earthquake affect the environment by knocking down trees and causing

Answer 6

Landslides

Question 7

Volcanoes affect the environment by The air

Answer 7

Polluting

Question 8

Volcanoes affect the environment by animals losing their

Answer 8

Habitats

Question 9

Volcanoes affect the environment by the hot. _________ can burn forest

Answer 9

Lava

Question 10

Is a mountain that builds up around an opening in the earth’s crust

Answer 10

Volcano

Question 11

Volcanoes occur at opening in the earth’s

Answer 11

Crust

Question 12

Volcanoes can affect plants by The plants

Answer 12

Killing

Question 13

Can help plants grow

Answer 13

Volcanic soil

Question 14

Is a sudden shaking of earths crust

Answer 14

Earthquakes

Question 15

Sudden movement along a is what causes earthquakes

Answer 15

Fault

Question 16

An ocean earthquake may cause a

Answer 16

Tsunami

Question 17

Is a line of weakness in rocks

Answer 17

Fault

Question 18

Giving people advance notice of earthquakes and volcanoes can help keep them

Answer 18

Staying safe

Question 19

Natural hazards have helped scientists understand more about the earth’s

Answer 19

Structure