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ITBS Level 11 Grade 5 Science 2
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Avg score: 75% Most missed: “What is the term for the motion of one object in the sky around another, such as…”

Directions: Use the information below and your knowledge of science to answer questions.

If you set a camera up pointing at the sky and leave it for a few hours, you can see how the stars appear to move across the sky over time.

Here's an example of the kind of picture you can get:


ITBS Level 11 Grade 5 Science 2
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4 Questions

1. The Sun is also a star, but it looks much bigger and brighter than other stars. What makes the Sun look so bright?
2. If you look at the streak produced by any one star, you can see that it forms a semicircle. Based on that information, how much time passed while this picture was taken?
3. What is the term for the motion of one object in the sky around another, such as the Earth around the Sun or the Moon around the Earth?
4. What exactly is causing the stars to appear to move?