Planet Earth Units 4-5 Key Terms

Question 1

Four layers of the earth

Answer 1

1. Core
2. Upper mantle
3. Lower mantle
4. Crust

Question 2

Where we are

Answer 2

Crust

Question 3

Rock material lithosphere

Answer 3

Mantle

Question 4

Post of iron and nickel liquid

Answer 4

Outer core

Question 5

Solid ball because of pressure from all layers

Answer 5

Inner core

Question 6

Pangea super continent

Answer 6

Continental drift

Question 7

Sonar

Answer 7

Sound navigation and ranging

Question 8

Mid Atlantic Ridge

Answer 8

Seafloor spreading

Question 9

Earth is made up of different _______

Answer 9

Plates

Question 10

Earth is made up of different plate sections. These plates are always moving on the mantle due to convection currents

Answer 10

The theory of plate tectonics

Question 11

Plates that come together

Answer 11

Converging plates

Question 12

Plates that pull apart or separate

Answer 12

Diverging plates

Question 13

Evidence of continental drift

Answer 13

Plants animals and fossils found similarities of rocks coal found in non-tropical climates

Question 14

Flow resulting from rise of warmer and the sinking of cooler material

Answer 14

Convection current

Question 15

Two plates collide Wannish and under the other

Answer 15

Subduction zones

Question 16

Special machine scientist use to measure earthquakes magnitude and are attached to bedrock

Answer 16

Seismograph

Question 17

Sturdy rock seismographs attached to it

Answer 17

Bed rock

Question 18

Scale used to describe magnitude of earthquake

Answer 18

Richter scale

Question 19

Energy waves that travel out word from source of focus

Answer 19

Seismic waves

Question 20

Primary waves

Answer 20

Fastest, weakest, pass-through all solid liquid and gas and least amount of damage

Question 21

Secondary waves

Answer 21

Faster than surface but slower than primary, passed through solids, medium amount of damage

Question 22

Surface waves

Answer 22

Slowest, greatest damage, strongest, pass-through solids

Question 23

Focus

Answer 23

Where earthquake begins inside earth

Question 24

Fault

Answer 24

And pressure is too great the rock break suddenly creating a fault

Question 25

Three types of faults

Answer 25

Normal fault, reverse faults, strike slip or transform fault

Question 26

Normal faults

Answer 26

Stretch apart and break valleys form

Question 27

Reverse faults

Answer 27

Rocky squeeze by the movement of the plates forcing them up and over other rocks

Question 28

Aftershocks

Answer 28

Call earthquake after big one can cause damage buildings to collapse

Question 29

Epicentre

Answer 29

The earthquake originates on the surface of the earth directly above Focus

Question 30

Strike-slip or transform faults

Answer 30

The rocks have many bumps and bolts shoes in them they become twisted and strained it and eventually break