Quick picks on gravitation

Exercise and reference answers

Questions

1. Question

   Naked eye records of planets came from:

   Choices

   1. Tycho Brahe
   2. Kepler
   3. Newton

   Correct choice

   Tycho Brahe

2. Question

   The nearest orbital point to the Sun is the:

   Choices

   1. Aphelion
   2. Perihelion
   3. Focus

   Correct choice

   Perihelion

3. Question

   Equal areas are swept in equal:

   Choices

   1. Orbits
   2. Turns
   3. Times

   Correct choice

   Times

4. Question

   Period squared goes as the axis:

   Choices

   1. Cubed
   2. Squared
   3. Halved

   Correct choice

   Cubed

5. Question

   The escape speed of the moon is about:

   Choices

   1. 9.3 km/s
   2. 2.3 km/s
   3. 0.3 km/s

   Correct choice

   2.3 km/s

Instructions

Tap the correct answer before the round moves on.

Explanation