Beam to Moon (Ratios and Proportions)


Apply ratios and proportions to find the weight of a person on the moon (or on another planet). Weigh an object on Earth and on the moon and weigh the person on Earth. Then set up and solve the proportion of the Earth weights to the moon weights.

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Assessment Questions (5):

  1. A sledgehammer weighs 18 pounds on Earth and weighs 4 pounds on the planet Namar. You could determine a 100–pound earthling's weight on Namar using the proportion:
  2. Based on the numbers given in the previous question, your weight on Namar would be about ___ times your weight on Earth.
  3. Based on the numbers from the previous two questions, an 80–pound Earth girl would weigh about ___ pounds on Namar.
  4. An astronaut who weighed 170 pounds on Earth found that his weight on Jupiter was 400 pounds. He captured an alien that weighed 120 pounds on Jupiter. What is the alien's weight on Earth?
  5. The same astronaut visited Pluto. His weight on Earth was still 170 pounds, and his weight on Pluto was only 10 pounds. He removed an ice core with a weight of 25 pounds on Pluto. What is the weight of the ice core on Earth?

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