Unit 7 Quiz 1

What would  most likely happen to the motion of the planets without the force of gravity from the Sun?

• 
  The planets would drift away from the Sun into outer space.

• The planets would slow down, eventually stopping all motion.

• The planets would continue to move in large circles or ellipses.

• The planets would gradually make smaller and smaller circles or ellipses. 

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NGSS.MS-PS2-4

NGSS.MS-ESS1-2

Among the bodies in our solar system are asteroids, moons, planets and a Sun.

Which statement  least supports the theory that gravity helped form our solar system?

• The Sun consists primarily of gases.

• Many objects in space are spherical in shape.

• Planets revolve around an object of greater mass.

• Protoplanets form by small masses combining to form larger masses.

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FL.SC.8.E.5.4

What type of force is gravity (select all that apply)?

• a non-contact force

• an repulsive force

• a weak force

• an attractive force

• a strong force

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NGSS.MS-PS2-4

Why do all of the planets orbit the sun rather than Earth?

• the sun has more mass

• the sun is a star

• the Earth is heavier

• the sun is in the middle of the milky way

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

An astronaut drops a hammer on the Moon, and a scientist drops an identical hammer on Earth. Both hammers are dropped from the same height. The hammer dropped on Earth falls to the ground faster than the hammer dropped on the Moon.

Why does the hammer on Earth fall faster than the hammer on the Moon?

• Earth has a stronger magnetic field than the Moon because Earth orbits the Sun.

• Earth has a stronger magnetic field than the Moon because Earth has an iron core.

• Gravitational attraction is stronger on Earth than on the Moon because Earth rotates on its axis.

• Gravitational attraction is stronger on Earth than on the Moon because Earth has a larger mass.

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NGSS.MS-PS2-4

According to current scientific theory, the solar system formed primarily from which materials?

• Colliding asteroids and comets

• Chunks of rock and heavy gases

• Electromagnetic radiation

• Space dust and light gases

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FL.SC.8.E.5.4

Without gravity we would________. 

• Float away
• Stay in the ground
• Nothing would happen.
• I don't know

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NGSS.5-PS2-1

The distance between objects along with the masses of the objects affect the gravitational force between the objects. Which statement is true according to Newton’s law of universal gravitation?

• When the masses of objects increase, gravitational force decreases

• When distance between objects increases, gravitational force decreases

• When distance between objects decreases, gravitational force decreases

• When the masses of objects decrease, the distance between objects decreases

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FL.SC.8.E.5.4

What force holds the planets in motion around the sun?

• Magnetic
• Electrical
• Gravitational
• Air Resistance

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

The two outermost planets orbiting the sun are Uranus and Neptune.  These planets each have many moons.  Which of these best explains why the moon Proteus travels in a circular pattern around Neptune?

• A gravitational force formed between Proteus and Neptune

• 
  A gravitational force formed between Neptune and the sun

• 
  A gravitational force formed between Neptune and Uranus

• A gravitational force formed between Proteus and the sun

Tags

FL.SC.8.E.5.4