light and shadow · 2020. 4. 22. · light and shadow. back next what is the difference between...
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Learning Objective: To explore the Sun as a light source and identify the difference between night and day.
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Light and Shadow
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What is the difference
between night and day?
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daynight
SUN
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The difference between night and day is all to do with the Sun. The Sun is the most powerful light source. The Earth
rotates on its axis once every day. It takes 24 hours to spin all the way round. The side of Earth facing the Sun is in daytime.
The side facing away from the Sun is in night-time. As the Earth turns, different parts come into the Sun’s light for day
while the opposite part becomes dark for night.
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When the Sun rises in the morning, it starts getting light. This time of day is called dawn. During the day, it looks
as though the Sun is moving across the sky. This is because the Earth is turning. Eventually, the Sun will
start setting, making the light disappear. This time of day is called dusk. Once the Sun has set completely, it
becomes night-time.
dawn dusk
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Look at this picture. Is it day or night? How do you know?
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We know this is daytime because we can see the Sun in the sky which gives us light.
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What about this picture? Is it night or day?
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Sometimes clouds can be very thick which makes the daytime gloomy but there is
always enough light to see during the day. It is only at night when the Sun has set
that we get total darkness. www.planbee.com
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What about this picture? Is it night or day? How do you know?
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This picture shows night. The sky is completely dark and the only light comes from artificial
lights. If these lights were turned off, it would be pitch black.
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Great work everyone!
What is the Sun?
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The Sun is a very bright star! It is very dangerous to look directly at it.
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How can you protect your eyes from the Sun?
Think, pair, share.
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never look directly at the Sun.
To protect your eyes you should...
wear sunglasses with UV protection.
wear a hat to shade your eyes.
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Hello! My name Molly and I can’t wait for my birthday party! We are going to have a picnic
outside and then we are going to have fireworks. My birthday is in the summer so it
will be nice and sunny.
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Plenary:
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Oh no! We can’t see the fireworks very well at all! Why can’t we see them?!BACK