Chapter 5-7 Test Study Guide

Front

What causes high and low tides on Earth?

Back

Gravity pulls the ocean water closer or farther from the Moon and Sun, causing water bulges in the ocean.

Front

Why are telescope mirrors adjusted before viewing a star?

Back

To get a clearer view of stars by compensating for atmospheric disturbances.

Front

What role does gravity play in creating an eclipse?

Back

Gravity controls the alignment of the sun, moon, and Earth.

Front

What does the movement of galaxies indicate about the universe?

Back

The universe is steadily expanding.

Front

What is the initial rapid expansion of the universe called?

Back

The Big Bang Theory.

Front

Define gravity.

Back

A force that attracts two bodies toward each other, affecting the motion of planets and moons.

Front

What is an eclipse?

Back

An event where one celestial body moves into the shadow of another celestial body.

Front

Explain the concept of atmospheric disturbances.

Back

Variations in the atmosphere that can affect the clarity of astronomical observations.

Front

What is the significance of the Big Bang Theory?

Back

It explains the origin of the universe and its subsequent expansion.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.