Human Impact on the atmosphere

What is meant by anthropogenic effects?

• overall human activities

• changes caused by human activities

• acts that leads to extinction

The following graph represents the rise in global temperature and CO2 numbers. What does the ppm stand for?

• parts per minute

• parts per millennium

• parts per million

The following graph represents the rise in global temperature and CO2 numbers. Why is it significant that they are represented on the same graph?

• To show that they are exactly the same.

• To show that an increase in carbon dioxide has a negative effect on the global temperature.

• To show that global temperatures decreases as the carbon dioxide increases.

Which of the following actions do not contribute to the greenhouse effect?

• burning fossil fuels

• driving in a car

• using synthetic fertilizers

• the ingestion of impure water

True or false:

At this moment, the greenhouse effect of the earth is under control.

• true

• false

The greenhouse effect is used to explain how earth traps heat to keep the earth at a good temperature. Which part of the earth is represented by the glass in this comparison?

• the atmosphere

• the octosphere

• the statosphere

• the globalsphere

The atmosphere only traps heat and never releases it.

• true

• false

Complete:

In the daytime, the Sun shines through the atmosphere ____ Earth's surface. After the Sun goes down, the Earth's surface ____ .

• warming up ; cools down

• cooling down ; warms up

• to contract the ; expands

• to expand ; shrinks

Complete:

Some of the ____ is trapped by the gases in the atmosphere.

• sun's rays

• heat

• carbon dioxide

• light

Heat-trapping gases in the atmosphere are called greenhouse gases. Check all the boxes that are considered greenhouse gases.

• carbon dioxide

• water vapor

• phosphor

• methane