Gravity on other worlds

Answer Key - Grade 11 Science Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   NASA lists Jupiter's surface gravity as 23.1 m/s². What would a 5 kg box weigh there, Ari?

   115.5 N
2. 2.

   NASA lists Venus's surface gravity as 8.9 m/s². What would a 12 kg box weigh there, Bo?

   106.8 N
3. 3.

   NASA lists Mercury's surface gravity as 3.7 m/s². What would a 20 kg box weigh there, Esme?

   74 N
5. 4.

   In the diagram, which world has the strongest surface gravity, Jun?

   • Earth, since its g is 9.8 m/s²
   • Venus, the world closest to Earth in size
   • Jupiter, at 23.1 m/s²
6. 5.

   In the diagram, about how many times Earth's surface gravity is Jupiter's, Luz?

   Use the picture in question 4.

   • About 318 times, like its mass
   • About 2.4 times
   • About 11 times, like its size
7. 6.

   A 10 kg rover goes from Earth to Mars. What happens to its mass, Milo?

   • It drops to about 3.8 kg
   • It stays 10 kg
   • It becomes 0 kg
8. 7.

   A spring scale reads 98 N for a box on Earth, where g = 9.8 m/s². What is the box's mass, Pia?

   • 10 kg
   • 960.4 kg
   • 98 kg
9. 8.

   Which two things set the surface gravity of a world, Ren?

   • Its temperature and its color
   • Its distance from the Sun and its air
   • Its mass and its radius
10. 9.

    Two worlds have the same mass, but one has twice the radius of the other. Which has the stronger surface gravity, Tala?

    • The smaller one, 4 times as strong
    • They are the same, since the masses match
    • The bigger one
11. 10.

    Two worlds have the same radius, but one has twice the mass. How do their surface gravities compare, Zee?

    • The heavier one's is 4 times as strong
    • They are the same, since the sizes match
    • The heavier one's is twice as strong