The Universe

Which one of the following best describes a planet?

• space and all the matter and energy in it

• many stars held together by gravity

• any one of the primary bodies that orbits a star

• a large celestial body that is composed of gas and emits light

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

If something has an apparent magnitude of 30, then what would be needed in order to observe it?

• the naked eye

• binoculars

• a powerful microscope

• a powerful telescope

How far is one light year?

• 9.5 trillion km

• 7.5 billion km

• 1.7 trillion km

• 4.3 billion km

Tags

NGSS.MS-ESS1-3

If something is 17 light years away from Earth, then how long would it take light from that object to reach us?

Which of the following would be the dimmest apparent magnitude?

• 8.62

• 1.24

• -0.33

• -1.79

Which one of these would be the brightest star according to absolute magnitude?

• 9.51

• 4.12

• -0.12

• -1.03

What is the force that attracts objects in space and keeps them in orbit?

• Nuclear Fusion

• Density

• Gravity

• Composition

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

When several planets orbit a star this is called a...

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What do planets orbit in a solar system?

• star

• moon

• galaxy

• universe

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which of the following two terms relate to the actual brightness of a star?

• absolute magnitude and apparent magnitude

• size and luminosity

• apparent magnitude and luminosity

• absolute magnitude and luminosity