Astronomy Test Review

Astronomy Test Review

Assessment

Flashcard

Science

8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What are electromagnetic (EM) waves?

Back

Electromagnetic waves are waves of energy that travel through space at the speed of light, consisting of oscillating electric and magnetic fields. They include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

2.

FLASHCARD QUESTION

Front

Which EM wave has a lower frequency than X-Ray and shorter wavelengths than Infrared?

Back

Ultraviolet (UV) waves.

3.

FLASHCARD QUESTION

Front

What is red shifting in astronomy?

Back

Red shifting is the phenomenon where light from distant galaxies is shifted towards the red end of the spectrum, indicating that the galaxies are moving away from us, which supports the theory of the expanding universe.

4.

FLASHCARD QUESTION

Front

True or False: We have telescopes that can study EM wavelengths the human eye cannot see.

Back

True.

5.

FLASHCARD QUESTION

Front

What direction do you go on an HR diagram to find the dimmest stars?

Back

Down.

6.

FLASHCARD QUESTION

Front

What element is found in all main sequence stars, which make up 90% of those in the universe?

Back

Hydrogen.

7.

FLASHCARD QUESTION

Front

What is the Big Bang theory?

Back

The Big Bang theory is the leading explanation for the origin of the universe, proposing that it began as a singularity approximately 13.8 billion years ago and has been expanding ever since.

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