Gravity and Space Test Knowledge
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Questions and Answers

What is the force equation for gravity?

  • Force = mass / gravity
  • Force = mass - gravity
  • Force = mass x gravity (correct)
  • Force = mass + gravity

What is the main component of the Sun?

  • Carbon and oxygen
  • Oxygen and nitrogen
  • Helium and nitrogen
  • Hydrogen and helium (correct)

What causes the polar auroras in the Northern hemisphere?

  • Solar winds (correct)
  • Atmospheric pressure changes
  • Earth's magnetic field
  • Reflection of sunlight

What is the difference between meteors and meteoroids?

<p>Meteors are when they enter the atmosphere; meteoroids are solid debris originating from the solar system (B)</p> Signup and view all the answers

What did Copernicus prove about Earth's motion?

<p>It revolved around the sun (B)</p> Signup and view all the answers

What is the force equation for gravity?

<p>Force = mass x gravity (D)</p> Signup and view all the answers

What is the age of the universe according to the big bang/nebular theory?

<p>13.7 billion years (C)</p> Signup and view all the answers

What are the main components of comets?

<p>Snow, ice, rock, dust, and carbon compounds (B)</p> Signup and view all the answers

What causes the visible impacts known as craters on planets?

<p>Asteroids and meteorites (B)</p> Signup and view all the answers

What celestial event marks the start of Spring and Fall when there is an equal amount of day and night?

<p>Equinox (D)</p> Signup and view all the answers

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