Chapter 2

Question 1

Solar Energy

Answer 1

Energy from the sun.

Question 2

Rotation

Answer 2

One complete spin of the Earth on its axis.

Question 3

Revolution

Answer 3

A trip around the sun.

Question 4

Latitude

Answer 4

The distance North and South of the Equator.

Question 5

Tropics

Answer 5

Regions close to the Equator.

Question 6

Freshwater

Answer 6

Water without salt.

Question 7

Glaciers

Answer 7

Large areas of slow-moving ice.

Question 8

Surface Water

Answer 8

Water that is found in Earth’s streams, rivers, and lakes.

Question 9

Precipitation

Answer 9

Water that falls to the Earth’s surface as rain, snow, sleet, or hail.

Question 10

Groundwater

Answer 10

Water found below Earth’s surface.

Question 11

Water Vapor

Answer 11

An invisible gas.

Question 12

Water Cycle

Answer 12

The movement of water from Earth’s surface to the atmosphere and back.

Question 13

Landforms

Answer 13

Shapes on the planet’s surface

Question 14

Continents

Answer 14

Large land masses

Question 15

Plate Tectonics

Answer 15

Slow-moving plates, or pieces of Earth’s crust

Question 16

Lava

Answer 16

A liquid rock from the Earth’s interior

Question 17

Earthquakes

Answer 17

Sudden, violent movements of Earth’s crust

Question 18

Weathering

Answer 18

The process by which rock is broken down into smaller pieces

Question 19

Erosion

Answer 19

Movement of sediment from one location to another