Astronomical Unit

What is Astronomical Unit?

• The average distance between the Sun and the Moon

• The average distance between Neptune and the Sun

• The average distance between Earth and the Sun

• The average distance between Earth and Moon

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-3

What is the time taken for the light to travel between the Sun and Earth?

• 2 minutes

• 4 minutes

• 8 minutes

• 12 minutes

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Why do we use light years and astronomical units to measure distances in space?

• Scientists want to sound smart.

• Hubble discovered these units and wanted to use them.

• Space is too small to use km, it wouldn't make sense.

• Space is too big, vast, enormous to use traditional units, like miles or kilometres.

Distance of Neptune is 4.5 x 10⁹ km from the Sun. Calculate its distance in A.U.

• 3 A.U.

• 30 A.U.

• 4.74 X 10^-4 A.U.

• 4.74 A.U.

Tags

NGSS.MS-ESS1-3

What is the most appropriate unit of astronomical distance to represent the distance between an Earth-orbiting space station and Uranus?

• kilometer

• light year

• lunar distance

• astronomical unit

Astronomical Unit is approximately 1.49897870700 x 10^11 m. How would this be written in standard notation?

• 149,597,870,700 m

• 149597870.700 m

• .00149597870700 m

• 149,000,000 m

Tags

NGSS.MS-ESS1-3

Earth's orbit is 149,597,870 km, on average, away from the Sun. Convert that to Astronomical Units (AU). Show your work and cross out the units that cancel.

Tags

NGSS.MS-ESS1-3

Which of the following best describes the differences between an astronomical unit and a light-year, and why are these units essential in astronomy?

• An astronomical unit is the distance between the Earth and the Sun, while a light-year is the distance light travels in one year. Both are essential for measuring vast distances in space.

• An astronomical unit is a measure of time, while a light-year measures distance. Both are used to understand the age of the universe.

• A light-year is the distance between the Earth and the Moon, and an astronomical unit measures the speed of light. They help in navigation within our solar system.

• Both are units of time used to measure the duration of celestial events. They are crucial for predicting astronomical phenomena.

Tags

NGSS.MS-ESS1-3

Why do we use light years and astronomical units (149.6 million kilometers) to measure distances in space?

• Scientists want to sound smart.

• Hubble discovered these units and wanted to use them.

• Space is too small to use km, it wouldn't make sense.

• Space is too big, vast, enormous to use traditional units, like miles.

Mars' orbit is 1.52 AU, on average, away from the Sun. Convert that to kilometers (km). Show your work and cross out the units that cancel.

Tags

NGSS.MS-ESS1-3