Astronomy Terms

Lightyear is the measurement of...

• the speed of light

• the amount of time light can travel one parsec

• the distance light can travel in one year

• the distance light can travel in one second

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

Proxima Centauri is the closest star to Earth after the Sun and is located 4.3 light years away from Earth. How long does it take light from Proxima Centauri to reach Earth?

• 1 year

•  4.3 years

• 43 years

• 10 trillion years

What does a light-year measure?

• Brightness

• Time

• Distance

• Wavelength

What does astronomical units and light-years have in common?

• Both measure the speed of light in a vacuum.

• Both measure the energy emitted by astronomical bodies.

• Both measure the amount of time it takes for light to reach Earth.

• Both measure the distance between objects in space

In the image , what does X represent?

• 1 light-year

• 1 meter

• 1 year

• 1 AU

Tags

NGSS.MS-ESS1-3

I am a rock (moderate size) entering a planet's atmosphere.

• meteor
• meteorite
• asteroid
• comet

Which of the following statements is true?

• Asteroids are made of rock and metal

• Comets are made of ice, rock, and dust

• Comets can be found in the Oort Cloud

• All the above

Tags

NGSS.MS-ESS1-3

Comets make there way around the sun in an elliptical orbit.

• TRUE

• FALSE

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Where are most of the asteroids in the solar system located?

• Asteroid Belt

• Orion's Belt

• Gemini Area

As comets approach the sun they travel faster and have:

• shorter tails

• medium tails

• longer tails

• no tails due to solar winds