Why do astronomers use light years as a measurement?

it's an easier way to describe huge distances

because miles & kilometers are sufficient

it's an easier way to describe large objects such as stars

because distances in space is still unknown.

What does the term 'heliocentric' mean?

measured from or considered in relation to the center of the sun

measured from or considered in relation to the center of the earth

the path followed by a celestial body around a star

a celestial body that orbits around another celestial body

Which of the following statements are false?

The Moon's gravitational pull generates the tidal force.

A full revolution of the Earth takes 365.25 days.

The Sun always illuminates one half of the Moon.

The red-shift in the spectral lines of light, reaching us from other galaxies implies that these galaxies ____________.

Are moving farther apart from one another

Are moving closer to one another

What is the big bang theory?

A theory that states that the universe started in a small mass and then expanded, the expansion cooled down the temperature and that resulted in the formation of matter, energy, space and time.

A theory that states that the universe started in a large mass and then imploded to form everything.

A theory that states that the universe was there, will be and is there. Is homogeneous and isotropic.

A theory that states that the universe is slowly coming back to a center.

hydrogen is used up in fusion processes

Which is true about the sun?

It is a planet close to the Earth.

It is the largest star in the galaxy.

Earth Science-REVIEW

Authored by KIMBERLY ABRIS

Physics

10th Grade

Used 2+ times

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50 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is another name for the Earth's land subsystem?

Atmosphere

Biosphere

Hydrosphere

Lithosphere

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the inner core made up of?

Liquid metal

Solid metal

Rocks

Magma

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary component of the hydrosphere?

Freshwater

Glaciers

Groundwater

Oceans

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This phenomenon happens when Earth's umbra obscures the moon's entire visible surface.

Lunar Eclipse

Partial Solar Eclipse

Total Lunar Eclipse

Annular Solar Eclipse

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the usual color of the moon during total lunar eclipse?

Red

Blue

Yellow

Black

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the speed of meteoroids as they enter the Earth's atmosphere?

it dissipates.

It moves faster.

It slows down.

it breaks down.

OPEN ENDED QUESTION

3 mins • 1 pt

Choose the best label for this picture.

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Earth Science-REVIEW

What is another name for the Earth's land subsystem?

What is the inner core made up of?

What is the primary component of the hydrosphere?

This phenomenon happens when Earth's umbra obscures the moon's entire visible surface.

What is the usual color of the moon during total lunar eclipse?

What happens to the speed of meteoroids as they enter the Earth's atmosphere?

Choose the best label for this picture.

What can be described as an exploding ball of gas?

Choose the best label for this picture.

How many km across is a light-year?

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