Earth Science Final Review

Which of the following stars is classified as a main sequence star?

• Betelgeuse

• Polaris

• Proxima Centauri

• Rigel

What is important about Hubble’s discovery that there is a red shift in the spectra of galaxies?

• It suggests that the universe is expanding.

• It suggests that the universe is contracting.

• It happened during the big bang.

• It suggests the existence of black holes.

Compare Galaxies A, B, and C to the Laboratory Hydrogen Spectral Lines from Earth.

According to Hubble's Law, which galaxy is moving the fastest away from Earth?

• Galaxy A

• Galaxy B

• Galaxy C

Newtons Law of Gravity:

_________________ the distance between two objects will increase the gravitational pull

• Increasing

• Decreasing

Newton's Law of Gravity:

______________the mass of an object will increase the gravitational pull.

• Increasing

• Decreasing

According to Kepler's second law, what must be true of the shaded regions of the diagram?

• area A must be larger than area B

• a planet moves faster as it covers area B than it does as it covers area A

• the areas of A and B must be equal

• area B must be larger than area A

Which of the following planets has the most circular orbit?

• Uranus

• Venus

• Jupiter

• Saturn

How would you classify the orbit of a planet that has an eccentricity closer to 1?

• ellipse

• circle

• epicycle

• period

What would you expect the tidal range to be when the Earth, Sun, and Moon are in the position shown in the diagram?

• Tidal range would be highest

• Tidal range would be lowest

• Earth would experience spring tides

• Range is unpredictable

How would you summarize what occurs when a hydrogen nuclei fuses into helium nuclei?

• the nuclei die

• particles split apart

• particles neutralize

• energy is released