01.4 Scales of Time

Gya refers to what unit of time?

• 1E3 years

• 1E6 years

• 1E9 years

• 1E12 years

Mya refers to what unit of time?

• 1E3 years

• 1E6 years

• 1E9 years

• 1E12 years

Kya refers to what unit of time?

• 1E3 years ago

• 1E6 years ago

• 1E9 years ago

• 1E12 years ago

When talking about the age of stars and the universe, what time unit do we use?

• Mya

• Gya

• Kya

• Hya

When talking about the development and evolution of life on the planet, what time unit do we use?

• Mya

• Gya

• Kya

• Hya

Tags

NGSS.MS-ESS1-4

The universe is approximately how old?

• 4.5 billion years

• 6 billion years

• 14 billion years

• 560 million years

Our solar system is approximately how old?

• 4.5 billion years

• 8 billion years

• 14 billion years

• 560 million years

Tags

NGSS.HS-ESS1-6

How long does it take light from the Sun to reach us?

• 8 minutes

• 1 light year

• 5 milllion years

• 17 days

Tags

NGSS.HS-PS4-1

The telescopic image I see of Proxima Centauri is how old?

• 6.8 hours old

• 2.5 months old

• 4.3 years old

• 5.4 centuries old

Tags

NGSS.HS-PS4-1

You do not see distant objects as they are, you see them as...

• they were.

• reverse images.

• they will be.

• distortions.