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Unit 5- LIGHT
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What are the straight lines that light travels in called?
ray
Which of the three surfaces do you think reflects light best? wood, mirror, aluminum foil. Explain.
Which of the 3 surfaces do you think absorbs light? mirror, aluminum foil, wood. Explain.
Name one example that is the source of light.
Sun, fire, light bulb, lamp, stars
Congratulations! You will have 5 Class Points.
Congratulations! You will receive 5 Class Points.
What is a solar system?
A system of planets, moons, and other objects orbiting a star.
Why does the Sun look bigger than other stars?
Because it is closer to Earth than other stars.
How can we show that light travels in straight lines?
By using a ray diagram.
How does light help us see objects?
It reflects off objects and into our eyes
Why do we have day and night?
The Earth spins on its axis.
What would happen if the Sun disappeared?
It would be dark and cold on Earth.
What do we call the path a planet takes around the Sun?
Orbit
What causes shadow?
when light is blocked by an object
What happens when the Earth spins on its axis?
Day and night occur
What is the closest planet to the Sun?
Mercury
What happens when light hits a mirror?
It reflects
How does light travel?
In straight lines
What is the main source of light on Earth?
Sun