An astronomical unit (AU) is ________.
A) the average distance between Earth and the Sun
B) the average distance between any planet and the Sun
C) any very large unit, such as a light-year
D) the current distance between Earth and the Sun
Question 2
Which of the following represents a case in which you are not accelerating?
A) going from 0 to 60 miles per hour in 10 seconds
B) driving in a straight line at 60 miles per hour
C) slamming on the brakes to come to a stop at a stop sign
D) driving 60 miles per hour around a curve
The Sun is the nearest star to Earth.
Earth with Rings
Rivers on Mars and Earth
Saturn as Seen from Earth
Hints of Earth’s Early Appearance
How to convert one unit of measurement to another unit (Part 1)