Question

the greenhouse effect
name date
reading passage
during winter storms, earth’s temperature and atmosphere play an important role in how much snow and ice form.
one key process affecting earth’s temperature is the greenhouse effect. when sunlight reaches earth, the surface absorbs some energy and releases it as heat. greenhouse gases in the atmosphere, such as carbon dioxide and methane, trap some of this heat and keep the planet warm enough for life.
without the greenhouse effect, earth would be much colder, and winter storms would be more extreme. however, when human activities increase greenhouse gases, too much heat can be trapped. this can change weather patterns, including stronger winter storms, melting snow earlier in the year, or unusual temperature changes.
understanding the greenhouse effect helps scientists explain why winter weather patterns may change over time.
multiple choice : choose the best answer

1. what is the greenhouse effect?

a. snow forming in clouds
b. heat trapped by gases in the atmosphere
c. wind movement
d. rainfall during storms

1. which gas helps trap heat in the atmosphere?

a. oxygen
b. nitrogen
c. carbon dioxide
d. hydrogen

1. heat released from earth travels mainly as:

a. visible light
b. sound waves
c. infrared radiation
d. ultraviolet rays

1. why is the greenhouse effect important?

a. it creates storms
b. it blocks all sunlight
c. it keeps earth warm enough for life
d. it causes snow

1. which human activity increases greenhouse gases?

a. photosynthesis
b. burning fossil fuels
c. evaporation
d. freezing water

1. increased greenhouse gases can lead to:

a. stable weather only
b. colder oceans
c. changes in weather patterns
d. no effect

Explanation:

Question 1

The passage says "Greenhouse gases in the atmosphere, such as carbon dioxide and methane, trap some of this heat and keep the planet warm enough for life" and defines the greenhouse effect as the process where these gases trap heat. Option A is about snow formation, C about wind, D about rainfall—none match the definition. So B is correct.

The passage states "Greenhouse gases in the atmosphere, such as carbon dioxide and methane" trap heat. Oxygen (A), Nitrogen (B), and Hydrogen (D) are not listed as greenhouse gases here, so C is correct.

Heat from Earth is released as infrared radiation (a type of heat radiation). Visible light (A) is from the sun, sound waves (B) are not heat transfer here, and ultraviolet rays (D) are from the sun. So C is correct.

Answer:

B. Heat trapped by gases in the atmosphere

Question 2