True or false on gravitation

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Planets move in elliptical orbits.

2. Statement is true

   No

   Statement

   The Sun sits at the centre of the ellipse.

3. Statement is true

   Yes

   Statement

   Equal areas are swept in equal times.

4. Statement is true

   No

   Statement

   A planet moves faster when farther out.

5. Statement is true

   Yes

   Statement

   The moon has no atmosphere.

6. Statement is true

   No

   Statement

   Kepler recorded the observations himself.

Instructions

Decide whether each statement is true or false.

Explanation