Our Solar System

Which famous scientist was first to describe the principle of gravity?

• Placid McNally
• Sir Isaac Newton
• Erwin Schrodinger
• Albert Einstein

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NGSS.HS-PS2-4

Order the following according to the smallest force of gravity to the largest force of gravity: Earth, Moon, Sun.

• Moon, Earth, Sun
• Earth, Moon, Sun
• Sun, Moon, Earth
• Sun, Earth, Moon

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

Gravitational force depends on _____________. Mark all that apply

• The distance between the objects
• The mass of the objects
• The volume of the objects
• None of these

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NGSS.MS-PS2-4

Gravity is

• an attractive force
• a type of magnetism
• a type of electricity
• a form of energy

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NGSS.MS-PS2-4

The gravitational force becomes smaller as objects move closer to each other.

• True
• False

The orbits of the planets are _____.

• ellipitical
• circular
• square
• triangular

Tags

NGSS.MS-ESS1-2

The time it takes a planet to make one complete orbit around the Sun is known as its ____________.

• oribital period
• constellation
• eclipse
• sun spot

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The asteroid belt is the region of the solar system located roughly between the orbits of the planets _____ and _____.

• Earth, Mars
• Mars, Jupitor
• Saturn, Uranus
• Neptune, Pluto

Tags

NGSS.MS-ESS1-3

This planet has the smallest orbit in our soloar system.

• Earth
• Mars
• Venus
• Mercury

There are __________ planets and _________ dwarf planets in our solar system.

• eight, five
• nine, twelve
• four, four
• five, eight