Unit 6: Astronomy

How does energy from the sun help maintain life on Earth?

• heats Earth's atmosphere, stabilizes temperatures, creates environments suitable for life

• forms the ocean's water and oxygen in the atmosphere

• prevents destruction of the magnetic field around Earth

• is absorbed by Earth's mantle, driving plate tectonics

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Describe Earth's shape.

• Earth has a greater circumference around the equator than around the Prime Meridian because of its rotation about its axis.

• Earth has a greater circumference around the equator than around the Prime Meridian because of its revolution around the sun.

• Earth has a greater circumference around the Prime Meridian than around the equator because of its rotation about its axis.

• Earth has a greater circumference around the Prime Meridian than around the equator because of its revolution around the sun.

When the sun, moon, and Earth are aligned in a relatively straight line, what is most likely to occur?

• a change in global wind patterns

• a change in temperature

• more earthquakes

• a larger-than-normal difference between high and low tides

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS2-4

Nuclear fusion powers the Sun and other stars. Which of these statements correctly describes what happens during nuclear fusion in stars?

• Hydrogen nuclei combine to become a helium nucleus, absorbing energy

• Helium nuclei combine to become a hydrogen nucleus, releasing energy

• Hydrogen nuclei combine to become a helium nucleus, releasing energy

• Helium nuclei combine to become a hydrogen nucleus, absorbing energy

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Which of the following correctly describes how the Sun produces energy?

• one hydrogen atom and one lithium atom fuse into one helium atom

• one hydrogen and four lithium atoms fuse into one lithium atom

• two helium atoms fuse into one hydrogen atom

• four hydrogen atoms fuse into one helium atom

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Which of the following is the largest system in the universe, which Earth is only a very small part of?

• Jovian planets

• Halley's comet

• Milky Way galaxy

• Orion's belt

How long does it take Earth to make one complete rotation on its axis at the equator?

• 12 hours

• 24 hours

• 29.5 days

• 365 days

What has the greatest effect on the height of a tide?

• the revolution of Earth around the Sun

• the gravitational pull of the Moon

• the gravitational pull of the Sun

• the tilt of Earth on its axis

What is the main reason the seasons are opposite in different hemispheres?

• because Earth is tilted on its axis

• because the Sun rotates on its axis

• because Earth revolves around the Sun

• because of the distance between the countries

Tags

NGSS.MS-ESS1-1

The length of time between night and day on Earth varies throughout the year. Why is this?

• the position of the Sun

• the position of the Moon

• Earth's angle of tilt

• Earth's distance from the Sun

Tags

NGSS.MS-ESS1-1