Random question?

Which two factors determine the gravitational attraction between two objects?

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Question generated: Jenny's class made an instrument to measure air pressure. The instrument is a

Problem: Write a question you would see in a school textbook.

Answer: During subduction, one tectonic plate is forced below another. The subducting plate is forced into the

question: Write a question you would see in a school textbook. OPTIONS:
- landslides
- volcanoes
- avalanches
- floods
answer: Which rapid changes are caused by heat from inside Earth?

An example of a grad-school level question?
In an accurate diagram of the solar system, which object would be shown closest to Earth?

Random question?
A balloon filled with helium gas is set free and starts to move upward. Which of the following best explains why the helium balloon moves upward?