Causes of Climate Change

Question 1

Actual conditions (temperature, humidity, rainfall)

Answer 1

Weather

Question 2

Long term average of weather

Answer 2

Climate

Question 3

An individual weather even may be the ______ of climate trends

Answer 3

Opposite

Question 4

No ice sheets, warm, and mild everywhere

Answer 4

Greenhouse Climate

Question 5

Glacial ice somewhere, poles much colder

Answer 5

Icehouse Climate

Question 6

For the past 30 million years, Earth has had an _______

Answer 6

Icehouse Climate

Question 7

Ice sheets cover the Earth 18000 years ago. We are in an __________ period today

Answer 7

Interglacial Warm

Question 8

Most ice sheets ________ 10000 years ago

Answer 8

Melted away

Question 9

The climate has varied between warmer times _______ and colder times since then.

Answer 9

Optimums

Question 10

Middle Ages were __________ causing both the Vikings and the Black Death to spread

Answer 10

Warm and dry

Question 11

The Little Ice Age (1400-1800) was….

Answer 11

Colder

Question 12

Since ____ the Earth has been warming

Answer 12

1900

Question 13

Some gases are transparent to sunlight but opaque to heat radiation. Solar energy comes in, thermal energy can’t escape back out.

Answer 13

The Greenhouse Effect

Question 14

Levels of CO2 in the air have increased due to the:

Answer 14

Burning of fossil fuels

Question 15

Levels of methane and nitrous oxide have increased due to

Answer 15

Smog, leaking gas wells, etc

Question 16

Normal maximum levels of CO2 during past inter-glacials are roughly

Answer 16

300 parts per million.

Question 17

Our current level of CO2 in 2021 is

Answer 17

412.5 (rising fast)