The Universe

Scientists use the light-year to describe the relationships between objects in space. What does a light-year measure?

• the distance that light can travel in one year

• the brightness of light that travels through space

• the number of years it takes light to travel to Earth

• the time it takes light to travel 1 million km

Tags

NGSS.MS-ESS1-3

The sun is much larger than the moon. However, as viewed from Earth, the sun and moon appear to be the same size. Why do the sun and moon appear to be the same size when viewed from Earth?

• The moon is much hotter than the sun.

• The moon is much denser than the sun.

• The moon is much brighter than the sun.

• The moon is much closer to Earth than the sun.

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NGSS.MS-ESS1-1

NGSS.MS-ESS1-3

Which two objects in space are located farthest apart?

• Earth and Mars

• Earth and the sun

• Earth and the moon

• the Milky Way galaxy and the Andromeda galaxy

Space exploration has advanced our knowledge of the universe. Which space journey would take the longest?

• a journey from Earth to the sun

• a journey from Earth to the moon

• a journey from Earth to a star in the constellation Centaurus

• a journey from Earth to the farthest planet in our solar system, Neptune

Tags

NGSS.MS-ESS1-3

Which object is closest to Earth?

• Barnard’s Star

• Planet Neptune

• Andromeda galaxy

• Triangulum galaxy

Tags

NGSS.MS-ESS1-3

The sun and everything that revolves around it.

• solar system
• galaxy
• universe
• rotation

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The galaxy we are a part of is called:

• Milky Way

• Andromeda

• Whirlpool

• Sombrero

From smallest to the largest

• universe, solar system, galaxy

• galaxy, solar system, universe

• solar system, universe, galaxy

• solar system, galaxy, universe

Tags

NGSS.MS-ESS1-3

Use the clues to identify the objects being described. Most of these objects can be found in a large space between Mars and Jupiter. They are made of small and large rocks and they orbit the sun.  What are these objects called?

• Asteroids
• Stars
• Comets
• Planets

An astronomical unit is...

• The average distance between the Earth and the Sun

• The average distance between the Sun and Neptune

• The diameter of the sun

• The time it takes light to travel across our solar system

Tags

NGSS.MS-ESS1-3