big bang
What is the Big Bang Theory?
A. The idea that Earth suddenly exploded
B. The idea that the universe started from a very hot, small point
C. The idea that the Sun created the universe
D. The idea that stars never change
B. The idea that the universe started from a very hot, small point
What is gravity?
A. A force that pushes objects apart
B. A force that pulls objects toward each other
C. A type of energy from the Sun
D. A kind of orbit
B. A force that pulls objects toward each other
What causes the phases of the Moon?
A. Earth’s shadow covering the Moon
B. The Moon changing shape
C. The Moon’s position as it orbits Earth
D. Clouds blocking the Moon
C. The Moon’s position as it orbits Earth
What is the Doppler Effect?
A. When light disappears in space
B. When waves change as objects move
C. When gravity pulls objects together
D. When stars explode
B. When waves change as objects move
What mainly causes ocean tides on Earth?
A. Wind blowing across the ocean
B. Earth’s rotation
C. The Moon’s gravity
D. Ocean temperature
C. The Moon’s gravity
About how long ago did the Big Bang happen?
A. 1 million years ago
B. 10 million years ago
C. About 13.8 billion years ago
D. About 100 years ago
C. About 13.8 billion years ago
Why do planets stay in orbit around the Sun?
A. The Sun pushes them away
B. There is no gravity in space
C. The Sun’s gravity pulls them toward it
D. Planets choose to stay in place
C. The Sun’s gravity pulls them toward it
Which Moon phase is seen when the Moon is between Earth and the Sun?
A. Full Moon
B. New Moon
C. First Quarter
D. Waning Crescent
B. New Moon
What happens to sound or light waves when something moves away from you?
A. The waves get closer together
B. The waves stop moving
C. The waves spread farther apart
D. The waves become stronger
C. The waves spread farther apart
What happens during a high tide?
A. Ocean water moves farther from shore
B. Ocean water rises and covers more land
C. The Moon disappears
D. Waves stop moving
B. Ocean water rises and covers more land
What happened to the universe after the Big Bang?
A. It stayed the same size
B. It began to shrink
C. It began to expand
D. It turned into one giant star
C. It began to expand
What shape is most planetary orbits?
A. Square
B. Triangle
C. Circle or oval (ellipse)
D. Zigzag
C. Circle or oval (ellipse)
Which phase shows the entire side of the Moon lit up?
A. New Moon
B. Waxing Crescent
C. Full Moon
D. Third Quarter
C. Full Moon
What is red shift?
A. Light changing to red because of heat
B. Light waves getting shorter
C. Light waves stretching as objects move away
D. Stars turning red
C. Light waves stretching as objects move away
How does the Sun affect Earth’s tides?
A. It has no effect
B. It only affects night tides
C. Its gravity helps change tide strength
D. It causes earthquakes
C. Its gravity helps change tide strength
Which evidence helps support the Big Bang Theory?
A. Earth’s seasons
B. The movement of tectonic plates
C. The universe is expanding
D. The Moon causes tides
C. The universe is expanding
What happens to gravity if an object has more mass?
A. Gravity becomes weaker
B. Gravity disappears
C. Gravity stays the same
D. Gravity becomes stronger
D. Gravity becomes stronger
About how long does it take for the Moon to go through all its phases?
A. 1 day
B. 7 days
C. About 1 month (28–29 days)
D. 1 year
C. About 1 month (28–29 days)
Red shift tells scientists that a galaxy is:
A. Moving closer to Earth
B. Standing still
C. Moving away from Earth
D. About to explode
C. Moving away from Earth
What does planet habitability mean?
A. A planet has rings
B. A planet can support life
C. A planet has many moons
D. A planet is very large
B. A planet can support life
What formed as the universe cooled after the Big Bang?
A. Oceans and continents
B. Atoms, stars, and galaxies
C. Plants and animals
D. Mountains and volcanoes
B. Atoms, stars, and galaxies
What keeps the Moon in orbit around Earth?
A. Earth’s gravity
B. Wind in space
C. Light from the Sun
D. The Moon’s atmosphere
A. Earth’s gravity
What does the word waxing mean when talking about the Moon?
A. The Moon is getting smaller
B. The Moon is getting brighter
C. The Moon is not visible
D. The Moon is changing color
B. The Moon is getting brighter
Why is red shift important to scientists?
A. It helps explain the Moon’s phases
B. It shows that the universe is expanding
C. It explains why stars are hot
D. It causes gravity
B. It shows that the universe is expanding
Which condition helps make a planet habitable?
A. Very high gravity
B. Liquid water on the surface
C. No atmosphere
D. Constant volcanic eruptions
B. Liquid water on the surface