Why do astronomers use astronomical units (AU) instead of kilometers (km)?(1 point)

Question

Responses

AU is used for spacing, while km is used for length.
AU is used for spacing, while km is used for length.

Large distances are easier to express in AU than in km.
Large distances are easier to express in AU than in km.

AU is used in astronomy, while km is used in physics.
AU is used in astronomy, while km is used in physics.

There are no km in outer space, only AU.
There are no km in outer space, only AU.

Answer 1

AU is used for spacing, while km is used for length. Large distances in space, such as the distances between planets or between stars, are better expressed in astronomical units (AU) because it provides a more convenient scale for understanding these vast distances. One astronomical unit is approximately equal to the average distance between the Earth and the Sun, which is about 150 million kilometers. Using kilometers to measure these distances would result in very large and less comprehensible numbers.

Answer 2

Why do astronomers use astronomical units (AU) instead of kilometers (km)?(1 point)
Responses

AU is used for spacing, while km is used for length.

Large distances are easier to express in AU than in km.

AU is used in astronomy, while km is used in physics.

There are no km in outer space, only AU.

Answer 3

AU is used for spacing, while km is used for length. Large distances are easier to express in AU than in km.

Answer 4

What would missing data do to the accuracy of a model?(1 point)
Responses

Missing data would not affect a model’s accuracy.
Missing data would not affect a model’s accuracy.

Missing data would make a model accurate.
Missing data would make a model accurate.

Missing data would make a model inaccurate.
Missing data would make a model inaccurate.

Missing data would enhance a model’s accuracy.

Answer 5

Missing data would make a model inaccurate.