Chapter 17 L.39

Question 1

Earth is the _ planet from the sun

Answer 1

3rd

Question 2

Why is the earth’s shape not exactly round

Answer 2

Bcuz of the gravity

Question 3

Earths atmosphere mostly consists of _ and _

Answer 3

Nitrogen and oxygen

Question 4

Why is the earth called the blue planet

Answer 4

Bcuz the earth is made of 70.8% water

Question 5

How did the earth get so much elevations

Answer 5

The first reason is gravity. Earth’s gravity pulls air as close to the surface as possible. The second reason is density. As altitude increases, the amount of gas molecules in the air decreases—the air becomes less dense than air nearer to sea level.

Question 6

Broad flat area

Answer 6

Plain

Question 7

Has a small summit. Around 600m elevation

Answer 7

Mountain

Question 8

A chain of mountains. A principal or major mountain range of a continent is reffered to as Cordillera

Answer 8

Mountain ranges

Question 9

Is a highland that is less massive than a mountain

Answer 9

Hill

Question 10

Is a highland with a top that is broad and flat like a plain

Answer 10

Plateau

Question 11

Is a hill or mountain formed around a weak area of the earth’s crust through which molten rock from beneath reaches the surface

Answer 11

Volcano

Question 12

Relatively long and flat area between two highlands

Answer 12

Valley

Question 13

Is a deposit of a sand and soil at the mouth of some rivers.

Answer 13

Delta

Question 14

A wetland saturated with water

Answer 14

Swamp

Question 15

Characterized by grasses, cattails and other smaller plants, something like a wet Meadow

Answer 15

Marsh

Question 16

A piece of land nearly surrounded by water. It may or may not be connected to the mainland by a narrow strip of land called an isthmus

Answer 16

Peninsula

Question 17

A coral reef or sand bank

Answer 17

Cay