Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon...
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Transcript of Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon...
![Page 1: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/1.jpg)
Partial Eclipseof the
Sun
9:32 am
![Page 2: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/2.jpg)
Partial Eclipse of the SunWhat is it?
• It’s where the Moon passes in front of the disc of the Sun
• The Sun is 400 times bigger than the Moon but it is also approximately 400 times further away. This means that sometimes they appear the same size.
• The eclipse that we see is the shadow of the Moon.
• A total eclipse is when we view from the umbra
• A partial eclipse is when we view from the penumbra
![Page 3: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/3.jpg)
Partial Eclipse of the Sun
You can see the shadow formed on the Earth
![Page 4: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/4.jpg)
Partial Eclipse of the Sun• Observers in the
umbra see a total eclipse. The Sun is blocked out.
• Observers in the penumbra see a partial eclipse.
• The path of totality is 16,000 kilometres long.
• The diameter of the umbra is only 260 km.
![Page 5: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/5.jpg)
Partial Eclipse of the Sun• There are 3 types of
solar eclipse.• A total eclipse is where
the Sun is blocked out.• A partial eclipse is
where part of the Sun is blocked out.
• An annular eclipse is when the Moon is a little further from the Earth and it doesn’t cover the Sun completely. The orbit of the Moon is not circular.
![Page 6: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/6.jpg)
This animation shows the eclipse as it travels across the Earth
![Page 7: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/7.jpg)
NEVER LOOK DIRECTLY AT THE SUN….
YOU WILL BE BLINDED
![Page 8: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/8.jpg)
This is what a total solar eclipse looks like
NEVER LOOK AT THE SUN DIRECTLY
![Page 9: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/9.jpg)
This is what a partial solar eclipse looks like
NEVER LOOK AT THE SUN DIRECTLY
![Page 10: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/10.jpg)
Things that you may notice…
Eclipse projections from trees
![Page 11: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/11.jpg)
Things that you may notice…
The Moon in front of the Sun and it going quite dark
![Page 12: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/12.jpg)
Things that you may notice…
The temperature may drop by a few degrees
![Page 13: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/13.jpg)
Things that you may notice…
The birds may stop singing and dogs will bark
![Page 14: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/14.jpg)
How to view safely…• You can only view the
sun indirectly during a partial eclipse.
• Sunglasses do not protect your eyes.
• If you do look at the Sun directly then you will be blinded (permanently)
![Page 15: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/15.jpg)
How to view safely…Pinhole card method (simple)
Instructions on the next slides…
![Page 16: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/16.jpg)
How to view safely…The competition
• Your task is to build a safe eclipse viewer.
• There are prizes for the best ones.
• Your tutor will show you ways of building them.
• You can find instructions on the net.
• You can work on them in tutor time and at home.
![Page 17: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/17.jpg)
How to view safely…Pinhole card method (simple)You will need:
2 pieces cardAluminium foilPin or needleSellotapeScissors
![Page 18: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/18.jpg)
How to view safely…Pinhole card method (simple)Cut a rectangle in the centre of one of the pieces of card.
![Page 19: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/19.jpg)
How to view safely…Pinhole card method (simple)Sellotape a square of aluminium foil over the hole.
![Page 20: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/20.jpg)
How to view safely…Pinhole card method (simple)
Pierce a small hole in the centre of the foil.
![Page 21: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/21.jpg)
How to view safely…Pinhole card method (simple)Secure the uncut card to somewhere. Hold the pinhole card at a distance with your back to the Sun
![Page 22: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/22.jpg)
How to view safely…Camera obscura method (harder) The box
makes the image brighter because it blocks out other light
![Page 23: Partial Eclipse of the Sun 9:32 am. Partial Eclipse of the Sun What is it? It’s where the Moon passes in front of the disc of the Sun The Sun is 400 times.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649dc75503460f94abc571/html5/thumbnails/23.jpg)
How to view safely…Other methods