Unit 3 Sun, Stars, and Gravity

Which best describes a star?

• hot rocks

• hot, glowing gases

• ball of fire

• shiny light

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Which forms of energy come from the sun?

• light

• sound

• heat

• electricity

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Which force causes a ball to fall to the ground?

• push

• gravity

• magnetism

• energy

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Which is true about planes and gravity?

• Planes use force to overcome gravity

• Planes avoid gravity

• Planes use light to overcome gravity

• Planes are not affected by gravity

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Which two tools work best for observing stars?

• telescope

• microscope

• binoculars

• magnifying glass

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How is the sun different than others stars?

• it is made of gas

• it is larger than all stars

• it is closer to Earth

• it is hotter than all stars

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You are shown a picture of the sun and a star pattern. In the star pattern, you see a bright star. What do you know about the sun and star from the picture?

• The sun is bigger

• The sun is hotter

• They are the same size

• They both give off light

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Which is true about a telescope?

• Scientists can't see many stars

• can only be used at night time

• Makes stars seem larger

• Makes stars seem smaller

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I was looking through my telescope and I was able to see 14 stars. They were different colors and sizes. Some of the stars were very bright.

What is this statement called?

• observation

• hypothesis

• conclusion

• variable

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How does gravity affect hammering a nail?

• Gravity pushes the board

• gravity pulls the hammer

• gravity has not affect

• gravity pulls the board

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