Relationships in the Universe

Which puts the objects in order from smallest to largest?

• planet, solar system, universe, galaxy

• planet , solar system, galaxy, universe

• universe, galaxy, solar system, planet

• galaxy, universe, solar system, planet

There are billions of stars in our galaxy and billions of other galaxies.

• True

• False

Why can't we observe what is going on in space at this exact moment?

• Light behaves in unpredictable ways.

• It takes light time to travel from its source to other places.

• Objects in space are very far away.

• We don't have the technology.

Which puts the distances in order from smallest to largest?

• AU, Light year, kilometel

• Kilometer, AU, light year

• Light year, AU, kilometer

• kilometer, AU, light year

Why does the Sun appear larger than other stars?

• It's brighter than other stars.

• It's hotter than other stars.

• It's closer than other stars.

• It's older than other stars.

Which object in space is made of gas, dust and million of stars.

• A galaxy

• A solar system

• The universe

• An asteroid belt

Comets only have a tail when they are closer to the Sun.

• True

• False

Which determines a day on a planet?

• Period of revolution

• Period of rotation

Why does it take light from the Sun 8 minutes to reach Earth?

• Light doesn't easily pass through Earth's atmosphere.

• Light has to travel an enormous distance to reach Earth.

• Light slows down as it travels through space.

• Light gets absorbed by different objects as it travels through space.

Comets are not part of our solar system, but planets are.

• True

• False

Answer explanation

Both are part of our solar system.

Tags

NGSS.MS-ESS1-3