22-23 PES 1.6
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Last updated 7 months ago
22 Nsɛmmisa
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We’ve been investigating the question If the stars are all around us, why can’t we always see them? In the last lesson we saw that when stars are farther away, they appear smaller. But, what about brightness?
Let’s look at an example that will help us think about if a star’s distance from Earth affects how bright it is.
Which car headlights look brighter?
Car Headlights look brighter when ___________
Which car headlights look less bright?
Car Headlights look less bright when ___________
How many stars are in our solar system?
Evidence: How does the model (picture) show your answer is correct?
Sentence starter: In the model, it shows _______________
What is the closest star to Earth?
Evidence: How does the chart show your answer is correct?
Sentence starter: In the chart, it shows _______________
Is the sun the biggest star?
Evidence: How does the chart show your answer is correct?
Sentence starter: In the chart, it shows _______________
Why does the sun look bigger than the other stars? Use evidence from the data table.
Sentence starter: In the data table it shows...
Why do the other stars look small? Use evidence from the data table.
Sentence starter: The other stars look small because _______________
Why does the sun look brighter than the other stars?
Sentence starter: The sun looks bright because _______________
Why does the sun look bigger and brighter than the other stars?
Sentence starter: The sun looks bigger and brighter because _______________
DIRECTIONS: The film, Lost in Light, shows the night sky in eight different locations. It’s sped up to show most of the nighttime in a few seconds.
At time 00:16, picture above, are the stars still in the sky, even though almost none can be seen?
What kind of lights are in the video at time 00:16?
When compared to the stars, are these lights actually small or large?
When compared to the stars, are these lights close or far away?
Why isn’t it possible to see all the stars in this night sky?
Sentence starter: We can't see all the stars in this night sky because the city lights are _____________ to us and look ____________
The picture above shows a row of street lamps. Which street lamp would appear brightest to Gustavo? How do you know? Use at least one piece of evidence from class to support your response.
NOW, let’s collect our own evidence to answer our question about why we don’t see other stars in daytime.
DIRECTIONS:
Read the passage below from the “Handbook of Stars and Constellations” to gather evidence.
Then answer the questions below.
Even though it’s a star, you won’t see the sun on any of the star maps in our books. That’s because to us on Earth, the sun seems to move through the sky from one constellation to another. The sun is not actually moving through the constellations, it just looks that way from our moving planet.
You can’t observe constellations when the sun is in the sky because the light from the sun overwhelms, or blocks out, the light from all the other stars. The sun is much closer to Earth than any other star, so the sun’s light looks much, much brighter than the light from other stars.
Based on the article, why can't we see stars in the daytime?