Topic 8 Lesson 2 Greenhouse Gases

What is the role of greenhouse gases in Earth's atmosphere?

• They trap heat

• They cool the Earth

• They have no effect

• They create oxygen

Without greenhouse gases, thermal energy would ______ directly into space.

• A) radiate

• B) condense

• C) evaporate

• D) solidify

Which of the following gases is not mentioned as a contributor to the greenhouse effect?

• Water vapor

• Carbon dioxide

• Methane

• Oxygen

Fill in the blank: The greenhouse effect involves gases like water vapor, carbon dioxide, methane, and _______ absorbing heat leaving Earth's surface.

• A) Nitrous oxide

• B) Oxygen

• C) Hydrogen

• D) Helium

Fossils of warm-weather plants found in Antarctica suggest that the climate was ______.

• colder

• warmer

• unchanged

• unpredictable

By analyzing ice cores, scientists can reconstruct climate factors in Earth's past and how they have ______.

• disappeared

• remained the same

• changed

• multiplied

Which of the following is NOT indicated by the growth rings of a tree?

• Rainy season

• First year growth

• Dry season

• Tree height

What is climate change?

• A) A sudden or gradual change in Earth's climate.

• B) A change in weather patterns over a week.

• C) A temporary change in temperature.

• D) A change in the Earth's orbit.

What happens to Earth's continents over time?

• They remain static

• They gradually shift and move

• They disappear

• They expand infinitely.

What does the energy output of the sun affect?

• A) Earth's tilt

• B) Earth's orbit

• C) Climate

• D) Ocean currents