L1 The Structure of the Solar System

The Sun and the objects that orbit it make up the

• spherical shape

• solar system

• inner planets

• outer planets

Answer explanation

You are smart!

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

The Sun is a star made up mostly of

• hydrogen gas

• oxygen

• rocky material

• asteroids

Answer explanation

HOT Place to be!

Tags

NGSS.MS-PS1-1

______________ produces enormous amounts of energy in the Sun.

• nuclear fusion

• bonfires

• hydrogen gas

• ice and gases

Answer explanation

Nuclear fusion is what happens in the Sun and other stars and involves joining two atomic nuclei to make one larger one.

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NGSS.HS-ESS1-1

There are ____ planets in the solar system.

• 6

• 7

• 8

• 0

Answer explanation

The GREAT 8!

Tags

NGSS.MS-ESS1-3

___________ is used to measure long distances in the solar system.

• centimeters

• kilometers

• astronomical units

• period of revolution

Answer explanation

AU

Tags

NGSS.MS-ESS1-3

The time it takes an object to revolve once around the Sun is its

• period of revolution

• period of rotation

• period of orbit

• period of planet movement

Answer explanation

ONCE around the SUN! A year!

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The time it takes an object to SPIN once is called its...

• period of revolution

• period of rotation

• period of planet movement

• period of ellipse

Answer explanation

ONE DAY! Rotation!

The shape of a planet’s orbit is a(n) _______________

• ellipse

• octogon

• comet

• large

Answer explanation

a stretched-out circle

A planet moves _________ when it is closer to the SUN, than when it is farther away.

• slower

• faster

Answer explanation

That's what SPEED do!

Why is the SUN's gravitational force so strong?

• It has more MASS than any other object in the solar system.

• It is so HOT!

• It emits light for other planets.

• It has less mass than any other object in the solar system.

Answer explanation

99% of the MASS of the Solar System! THAT's BIG!

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4