Unit 6 RETEST

The moon remains in orbit around Earth because of the force of —

• Earth's rotation

• the moon's rotation

• Earth's gravity

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NGSS.MS-ESS1-1

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The diagram shows the motion of Earth and Moon around the Sun. What force keeps the Earth in orbit around the Sun?

• Earth's rotation

• Sun's gravity

• Moon's gravity

• Earth's gravity

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NGSS.MS-PS2-4

During a school project, Samuel learned that Buzz Aldrin was the second man to walk on the ____.

• Mars

• Moon

• Earth

• Sun

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NGSS.MS-ESS1-1

Elijah is learning about space exploration. What is one of the primary functions of a spacesuit?

• To provide entertainment

• To supply oxygen

• To make the astronaut invisible

• To cook food

What is the term for a small celestial body made of ice and dust that travels around the Sun?

• A) Star

• B) Satellite

• C) Comet

• D) Meteor

What defines a celestial body as a planet in our solar system?

• A) A small rocky body orbiting the Sun

• B) A body composed mainly of ice and dust

• C) A large celestial body that orbits the Sun and has cleared its orbit of other debris

• D) A collection of rocks and metal orbiting between Mars and Jupiter

The Earth has a ________ surface.

• Solid

• Gaseous

• Liquid

• Plasma

Which of the following is a feature of the Earth?

• Sunspots, solar flares

• Gaseous layers

• Solid surface

• Atmosphere of hydrogen and helium.

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What is one of the unique features of Earth compared to other planets in our solar system?

• Rings made of ice and rock

• Presence of a thick carbon dioxide atmosphere

• Abundance of liquid water

• Extreme surface temperatures

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NGSS.MS-ESS2-4

During a science class, Aiden and Elijah were discussing asteroids. Which of the following statements is true about asteroids?

• Asteroids are composed of gas.

• Most asteroids are located in the milky way between the orbits of Jupiter and Saturn.

• Most asteroids are located in the asteroid belt between the orbits of Earth and Mars.

• Most asteroids are located in the asteroid belt between the orbits of Mars and Jupiter.