Chapter 5-7 Test Study Guide

What part does gravity play in the creation of Earth's ocean tides? 

• It causes the ocean's waves to break.

• It leads to the salinity of the ocean water.

• It influences the rise and fall of the ocean tides.

• It secures the ocean's floor to the crust of the Earth.

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If Earth's gravitational pull on the moon were to be disrupted, how would this influence the moon's orbit?

• The moon's orbit would remain stable.

• The moon's orbit would become more circular.

• The moon would start moving towards the Earth.

• The moon would move away in a straight line in space.

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The initial rapid expansion of the universe is referred to by what concept?

• The Big Bang Theory

• The Galaxy Cluster Model

• The Supergiant Galaxy Theory

• The Cosmic Microwave Background Theory

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The movement of galaxies in relation to each other indicates what about the state of the universe? 

• The universe is shrinking in size.

• The universe is steadily expanding.

• The universe is in a state of perpetual stagnation.

• The universe is constantly oscillating between expansion and contraction.

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What role does gravity play in creating an eclipse? 

• It directs the moon's path around the Earth.

• It alters the path of the Earth around the sun.

• It controls the alignment of the sun, moon, and Earth.

• It causes light from the sun to bend around the planet.

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How do space probes enhance our knowledge about the universe?

• They help in forecasting weather patterns on Earth.

• They are responsible for radio signal transmissions.

• They solely observe the movement of comets around the sun.

• They collect data from distant planets and galaxies to provide information.

What is the purpose of a telescope in exploring the universe?

• They are used to transmit TV signals.

• They forecast weather systems on Earth.

• They exclusively monitor the activity of the moon.

• They capture and provide images of distant celestial bodies.

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Which two variables play an important role in the gravitational force between two celestial objects?

• mass of the objects

• color of the objects

• shape of the objects

• speed of the objects

• distance between the objects

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The image shows the emission spectrum of a galaxy between two different periods.

What does the shifting of the spectrum suggest?

• The galaxy is rotating.

• The galaxy is expanding.

• The galaxy is moving towards Earth.

• The galaxy is moving away from Earth.

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A teacher says the planets go around the Sun in elliptical orbits. What keeps the planets traveling in their orbits around the Sun?

• a magnetic force from Earth

• solar radiation from the Sun

• the centrifugal force of Earth

• the gravitational pull from the Sun

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