PES 2.3: What We See as We Spin
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Hello astronomers! We are going to look for even more evidence that will support our idea that the daily pattern of when we see the sun and other stars is caused by Earth spinning.
These pictures show the sun “setting.” However, we know that the sun and other stars don’t really move. Explain what is actually happening when it looks like the sun is setting.
The sun looks like it’s going down during a sunset because....
This video shows photographs taken from space that have been put together into a video. As you watch the video, pick a landmass, like Africa, to watch for to prove that the Earth is spinning.
We’ve done some great investigating into finding evidence that the Earth spins. Now, we’re going to use a digital model to show our ideas about why we see the sun and stars in a repeating pattern.
Go to the amplify app Model 2.3 Sun and Other Stars: https://apps.learning.amplify.com/modelingtool/#/tool/124/level/23_Sun_and_Other_Stars_id_2880
Follow the directions:
Click on the Earth. A pink dot appears. This is how you spin/rotate the Earth.
In the bottom of the Sim, you see two green observers. One can see the sun, one can see the stars. To rotate them, click on the person and move the pink dot.
Complete the missions and questions below.
Mission 1: Place the daytime observer (Bob) on Earth in Time 1(on the left) so he is standing in North America and sees the Sun.
Mission 2: Place the nighttime observer (Bob) in Time 2 (on the right) so he is standing in North America and sees the stars.
How long does it take for the Earth to spin all the way around to the same spot?
The next time the person would see Orion is… Select all that apply
Looking at Time 2, when is the next time the person (Bob) would see Orion (the stars)? Select all that apply
What causes the daily pattern of when we see the sun and other stars?
The daily pattern of when we see the sun and other stars is cause by ________________________
The Earth and person is facing
In the sky, the person will see the
In the model, it shows ______________
The Earth and person is facing
In the sky, the person will see the
In the model, it shows ______________
Use the words in the word bank to help you answer questions 11 to 15. You don't have to use all of the words.
Word Bank: daytime nighttime sun spin/rotate star day
How long does it take the Earth to spin one time?
Sentence starter: It takes the Earth _________________ to spin one time.
When the earth spins and faces the sun, what time of day is it?
Sentence starter: When the earth spins and faces the sun, it is __________________.
When it is daytime, what star do you see in the sky?
Sentence starter: When it is daytime, we see the __________________ in the sky.
When the earth spins and faces away from the sun, what time of day is it?
Sentence starter: When the earth spins and faces away from the sun, it is __________________.
When it is nighttime, what stars do you see in the sky?
Sentence starter: When it is nighttime, we see the __________________ in the sky.
DIRECTIONS: Use the image below to answer the questions.
Side A is facing the
You live on the “A” side of Earth. It is...
Side B is facing the
On the “B” side of Earth. It is...
