Ch 2 Study Guide

Question 0

How many planets are in our galaxy?

Answer 0

Eight planets

Question 1

What galaxy is the earth part of?

Answer 1

Milky Way galaxy

Question 2

Where is the Earth’s core?

Answer 2

Center of the earth

Question 3

Which part of the earth holds most of its mass?

Answer 3

Mantle

Question 4

What is the atmosphere

Answer 4

A layer of gases that surrounds the earth

Question 5

What is the lithosphere

Answer 5

The crust and upper mantle

Question 6

What is the hydrosphere

Answer 6

All water on earth

Question 7

What is the biosphere

Answer 7

All living things on earth

Question 8

Explain the theory of continental drift

Answer 8

Started as one continent named Pangaea, techtonic movement forced continents apart

Question 9

What percentage of earth is covered in ocean water

Answer 9

71%

Question 10

What are the four oceans

Answer 10

Atlantic, Pacific, Arctic, Indian

Question 11

What do the ocean currents help disperse

Answer 11

Heat

Question 12

What produced most natural freshwater lakes

Answer 12

Glaciers

Question 13

How were most salt water lakes created

Answer 13

Changing levels of Earth’s oceans

Question 14

What is a valley

Answer 14

Low land between hills and mountains

Question 15

What is a canyon

Answer 15

A narrow and deep valley with steep sides

Question 16

What is a tectonic plate

Answer 16

Pieces of earths lithosphere

Question 17

What is groundwater

Answer 17

Water held underground

Question 18

What is a volcano

Answer 18

A chamber under the ground that holds gases and magma

Question 19

What is an island

Answer 19

A body of land surrounded by water

Question 20

What is a peninsula

Answer 20

A body of land surrounded by water on three sides

Question 21

What is a harbor

Answer 21

A sheltered area of water that is deep enough to dock ships

Question 22

What is a Mesa

Answer 22

A raised area of land with a flat top

Question 23

what is subductive movement

Answer 23

One tectonic plate forces another tectonic plate under it

Question 24

What is a tectonic collision

Answer 24

Two tectonic plates crash into each other

Question 25

What is an earthquake

Answer 25

Caused when 2 tectonic plates collide and create a tremble in the earth

Question 26

Where is an earthquake's focus

Answer 26

Where the tectonic plates collide underground when an earthquake is formed

Question 27

What is an aftershock

Answer 27

When the place settle after an earthquake

Question 28

What is a tsunami

Answer 28

A great oceanic wave created by earthquakes and landslides

Question 29

What are two types of erosion

Answer 29

Mechanical and chemical

Question 30

Explain what water erosion and abrasion are

Answer 30

Water erosion is when particles are picked up by water and moved to different areas Abrasion is when water picks up particles and particles have a sandpaper effect on other particles

Question 31

What is wind erosion

Answer 31

Wind picks up particles and moves them to different areas