The Expanding Universe

Question 1

Which statements describe the principles of the big bang theory? Select two options.

Revolt · Accepted Answer

A: The universe is continuing to expand.; B: The universe stretched from a single point.

Question 2

Hubble measured the velocity of the movement of galaxies by using . Hubble’s law states that galaxies located farthest from the center of the universe than those closest to the center.

Revolt · Accepted Answer

A: the Doppler effect

Question 3

After our solar system began to form, dust and gas combined into small bodies that formed the planets. What are these small bodies called?

Revolt · Accepted Answer

C: planetesimals

Question 4

Use the drop-down menus to identify the order of these images for the formation of our solar system.

Revolt · Accepted Answer

Selection 1: 2; Selection 2: 1; Selection 3: 3

Question 5

Imagine you are an astronomer who recently discovered a new planet orbiting a distant star.Which set of characteristics would you use to classify this planet as an inner or terrestrial planet? Check all that apply.

Revolt · Accepted Answer

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Question 6

Why is Jupiter so much larger than Earth? Check all that apply.

Revolt · Accepted Answer

C: Outer planets attracted helium, hydrogen, and other gasses.; E: Gases escaped from inner planets and not from outer ones.

Question 7

Which statements explain current theories about dark energy and dark matter? Check all that apply.

Revolt · Accepted Answer

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Question 8

Which hypothesis is most supported by astronomers?

Revolt · Accepted Answer

A: The universe is currently expanding and will continue to expand.

Question 9

Which statements describe processes involved in the accretion of planetesimals and protoplanets? Check all that apply.

Revolt · Accepted Answer

B: Both involve the formation of solid particles from nebular materials.; D: Both involve the trapping of gases and the clumping of masses of matter.; E: Both involve the growing of gas grains with the addition of atoms and molecules.

Question 10

Question 10

Revolt · Accepted Answer

C: contain more dark matter

The Expanding Universe Answers

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