What are meteors?
Universe Exam

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Science
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Meteors are small particles from space that burn up upon entering Earth's atmosphere, creating a bright streak of light. They are considered harmless.
2.
FLASHCARD QUESTION
Front
Why is Venus called Earth's twin?
Back
Venus is called Earth's twin because it is similar in size and composition to Earth.
3.
FLASHCARD QUESTION
Front
What protects us from harmful UV rays?
Back
The ozone layer protects us from Earth's harmful UV rays.
4.
FLASHCARD QUESTION
Front
What role do greenhouse gases play in Earth's atmosphere?
Back
Greenhouse gases, like water vapor and carbon dioxide, trap thermal energy in the atmosphere, helping to keep the planet warm.
5.
FLASHCARD QUESTION
Front
Which planet is known to support life?
Back
Earth is the only planet known to support life.
6.
FLASHCARD QUESTION
Front
What is the ozone layer?
Back
The ozone layer is a region of Earth's stratosphere that contains a high concentration of ozone (O3) and absorbs most of the Sun's harmful ultraviolet radiation.
7.
FLASHCARD QUESTION
Front
What are comets?
Back
Comets are icy bodies in space that release gas or dust. They often have a bright tail when they come close to the Sun.
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