What is the greenhouse effect?

A Plants growing faster in greenhouses

B Atmospheric gases trapping heat from the sun near Earth's surface

C The cooling of the atmosphere

D Reflection of all sunlight back to space

✓ Correct Answer: Option B

Greenhouse gases (CO₂, methane, water vapor) trap infrared radiation, warming the Earth's surface.

💡 Why is B) the correct answer?

The correct answer to the question "What is the greenhouse effect?" is Option B: Atmospheric gases trapping heat from the sun near Earth's surface.

The other options — A) Plants growing faster in greenhouses, C) The cooling of the atmosphere, D) Reflection of all sunlight back to space — are incorrect for this ACT Exam Prep question. As explained above: Greenhouse gases (CO₂, methane, water vapor) trap infrared radiation, warming the Earth's surface.

📚 About This ACT Exam Prep Practice Question

This 1-level ACT Exam Prep question from the Science topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free ACT Exam Prep practice test or use flashcards for spaced repetition review.

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What is the greenhouse effect?

✓ Correct Answer: Option B

📚 About This ACT Exam Prep Practice Question

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