Unit 5: Earth and the Solar System PRACTICE REVIEW

Front

What is the primary element making up more than 90% of the sun's mass that fuels its nuclear fusion process?

Back

Hydrogen.

Tags

NGSS.HS-ESS1-1

Front

Which comet is likely furthest from the sun when at the same point in its orbit as others?

Back

Zigler.

Front

How does water's property of dissolving substances contribute to the stability of Earth's ecosystems?

Back

It facilitates essential chemical reactions necessary for life.

Tags

NGSS.MS-ESS2-4

Front

If an astronaut travels from Earth to the moon, how does their weight change due to gravity?

Back

Their weight will be less than their weight on Earth because of weaker gravity.

Tags

NGSS.MS-PS2-4

Front

If an astronaut travels from Earth to Jupiter, how does their weight change due to gravity?

Back

Their weight would be more than their weight on Earth because of stronger gravity.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Front

How does the distance of a planet from the sun affect its orbital speed?

Back

The farther a planet is from the sun, the weaker the gravitational pull and the slower it moves.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Front

What is nuclear fusion and why is it important for the sun?

Back

Nuclear fusion is the process where hydrogen atoms combine to form helium, releasing energy that powers the sun.

Tags

NGSS.HS-ESS1-1

Front

What role does gravity play in the orbits of celestial bodies?

Back

Gravity is the force that keeps celestial bodies in orbit around larger masses, like planets around the sun.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Front

What is the relationship between a planet's distance from the sun and its orbital period?

Back

The farther a planet is from the sun, the longer its orbital period due to weaker gravitational forces.

Tags

NGSS.MS-ESS1-2

Front

What is the significance of the moon's gravity being 1/6th that of Earth's?

Back

It affects the weight of objects and the ability of astronauts to move and perform tasks on the moon.