Chap 18

Question 0

Jet stream

Answer 0

Belt of high speed winds that blows across the upper latitudes of the earth

Question 1

Atmosphere

Answer 1

Envelope of gases that surrounds a planet, such as earth.

Question 2

Ozone layer

Answer 2

Concentrated oxygen (O3) that protects earth from harmful light

Question 3

Ionosphere

Answer 3

Upper part of the atmosphere that reflects long wave radio signals back to earths surface.

Question 4

Magnetosphere

Answer 4

Comes from inside the earth and extends 100,000 miles in space, protecting living things from the suns radiation.

Question 5

Radiation

Answer 5

-Heat transfer caused by waves, such as light.

Question 6

Conduction

Answer 6

Heat transfer caused by direct contact of two objects.

Question 7

Convection

Answer 7

Heat transfer caused by the movement of warmer, less dense air and cooler, more dense air.

Question 8

Greenhouse effect

Answer 8

Warming of the lower atmosphere as it traps heat from the ground.

Question 9

What are the 5 levels of earths atmosphere in order

Answer 9

Troposphere, stratosphere, mesosphere, thermosphere and exosphere.