1. The pattern that the sun made was an arc and the shape was a circle. Also, another pattern is the sun rises in the east and sets in the west. The evidence I have is if you look up at the sun then you will see the sun goes in an arch trail and that it rises in the east and sets in the west.

2. The shadows are my proof because when the sun is at its highest height, the shadows are shorter on objects. For an example, if you look at videos of this subject you will see for yourself.

3. It was important because the evidence wouldn't be accurate. For an example, if you were tracking the sun's daylight in Arizona and then travel to Brazil, it wouldn't be accurate, right?

4. It looked like it was on a roller coaster. To prove this it goes in an arch pattern trail, which is kind of like a roller coaster.

5. No, but the pattern would be very similar. The sun is always changing in its arch trail because once Mr. Solarz showed us a picture from a pinhole camera and all the patterns were different.

6. Same answer as five, but the pattern would be kind of similar.

7. Same as answer 5, but the pattern would be off by a lot!

8. It goes nowhere, it is just because the earth is always moving. This means the earth is rotating so sometimes you will see the sun sometimes you won't (day and night).

1. Explanation of Challenge
2. The Problem I Chose
3. The Solution I Chose

1. What was difficult?
2. What did you learn?
3. What advice can you give others for better time management?

  



       In this activity, we did a challenge. The challenge was to pick an environmental problem, then invent a solution. we had to make a prototype and then make a video of our solution. We also could've signed up for the real competition for a real prize for the solution to our problems.

     For my problem I picked litter in beaches. The reason why I picked this problem because if you look at local beaches sometime you'll find wrappers, pop cans  and also some class. This can lead to smelly beaches and dirty beaches that aren't really fun to play in!

​   I made up my invention which is called the "shovehole". It has holes in the middle so when you shovel up garbage sand goes down to the ground while the trash from the beach stays! This can help because it is made up of steel, so it is heavy duty and won't break easily. It is also cheap and is good for the environment!

1. This challenge was an invention challenge. We researched an environmental problem, did a drawing, made a prototype and then made a video describing our problem and solution.
2. The Problem I chose was beach litter. Beach is found found in beaches and sometimes it can get really bad as you can see in the picture above.
3. The Solution I chose was "shoveholes". They are shovels but with holes in them. When you shovel litter in a beach, sand goes out through the holes and liter stays in the shovehole.

1. The most difficult thing was coming up with the problem, and then to top that, it was hard for a solution!
2. I learned about inventing, time management, and environment. I learned to problem solve also.
3. The first 45 minutes, build your prototype, and after that, take 10 minutes to prepare you video and then take another 10 minutes to make a video and for the 30 minutes, you create your blog post.

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1. How are shadows made outside in the daytime? Provide some evidence to support your answer.
2. Can shadows be made inside the classroom? If so, how?
3. Do outside shadows change during the day? If so, how? Refer to the pole or stick the class observed outside if needed.
4. Think about the time between observations of the pole’s shadow. What happened?
5. What does this (the answer to #4) tell you about the sun’s position in the sky?
6. Insert one or two photos (from mine above) into your blog post to help you explain how the sun's position appears to follow an arc throughout the day (if weather allows).

1. The sun is the main reason. The second main reason is the object blocking the sunlight, which then creates a shadow.

2. Easy, same thing as in question 1 but instead of the sun, use lights. It is the same thing as the sun, except   it is almost like an indoor sun.

3.  Yes but it depends on the height of the sun. When the time is noon, the shadow of an object gets shorter because the sun is at it's highest point.

4. The shadows were shorter at noon. In the morning the shadows were longer and this happened because the position of the sun.

5. At noon, the sun makes a short shadow and in the morning or away from noon the shadow is longer. This happens because the sunlight is giving more sunlight (not actually) and so the object has less sunlight to block so it is short.

• if you take a picture in space, it is clear thta the shape of the Earth is round
• if you walk straight on the Earth, you will eventually meet the place you started (which happens if you are walking on a sphere)

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• Another fact for proof is that timezones. Timezones are explained because the Earth is spehere as you can see in the picture to the right, but if the Earth was flat, it would be different

• consider gravity, like Earth, since it is a sphere the amout the gravity stays with you because it is all in the center, but if the earth was flat, the amount of gravity wouldn't stay with you because you would have to be in the center for all the gravity because if you move away from the center you would have less gravity but not is not the case for a sphere becuase your are always in the center, just look at the pictures for an example

• another example is that if the earth was flat, wouldn't you fall off the edge? But if you said no you wouldn't because gravity, you were wrong because there is not a lot of gravity at the edge of the Earth so you would fall

• the shadow on the moon for a Lunar Ellcipse is round, and the shadow is from the Earth so the shape of the earth had to be a sphere

• when ships sail, they appear to sink as they pass over the curved surfce of the earth

• if the earth was any other shape (other than sphere), your weight would vary because you would be farther away from the center of the earth (which has gravity)