Science CA- Earth and the Universe

Which best describes the Big Bang Theory?

• The universe's existing objects move randomly with the potential of colliding in about 13.5 billion years.

• Most objects in the universe are moving away from each other as a result of an event that occurred about 13.5 billion years ago.

• Galaxies collided about 13.5 billion years ago forming the present objects in the universe.

• Galaxies moved toward each other after an event that occurred about 13.5. billion years ago.

What the center of our universe?

• A star composed of carbon and nitrogen

• A medium planet with an atmosphere

• A star composed of hydrogen and helium

• A black hole that was once a star

What is our sun?

• A star composed of hydrogen and helium

• A big ball of fire.

• A star composed of nitrogen and carbon

• A large, bright planet

Which of the following is gravity responsible?

• rotation of a planet on its axis

• phases of the moon

• orbits of the planets around the Sun

• tilt of Earth's axis

One day on Saturn is about 10 Earth hours. Which of the following best explains why a day on Saturn is shorter?

• Saturn rotates more rapidly than Earth.

• Saturn is less dense than Earth.

• Saturn's orbit has greater eccentricity than Earth's

• Saturn is much farther from the Sun than Earth.

Which image below best shows the relationships of the Sun, Earth, and Moon?

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• 
• 
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Put in order from smallest to largest:

Star, universe, galaxy, solar system.

• Star, solar system, galaxy, universe

• galaxy, star, solar system, universe

• universe, solar system, star, galaxy

• solar system, star, universe, galaxy

Which of the following is tell how satellites are used today?

• gathering pictures of Earth's surface

• gathering scientific data

• transmitting radio and television signals

• all answers are correct

Which layer of the sun is the hottest?

• Core

• Corona

• Chromosphere

• Photosphere

What occurs when the Moon passes through a part of the Earth's shadow?

• A partial solar eclipse

• A total solar eclipse

• A total lunar eclipse

• A partial lunar eclipse