science project

Science project (5 part essay)

Hello Canadian Space Agency, this is Joy Zhang reporting to tell you about the knowledge I know for you to determine that I would make a good student to report back to about the journey…now when you choose someone; you need to make sure they actually know about space. Well here’s a fact I know that you may find interesting “any free moving liquid in outer space will form itself into a sphere, because of the surface tension.” Impressed yet? If not, keep reading.

First of all, a main thing of space, the stars! A star is a huge exploding ball of gas held together by gravity. It is created by masses of hydrogen and helium atoms. Hydrogen and helium atoms in space are called a nebula, which is the starting of stars. Nebulae grow by attracting more hydrogen and helium atoms that becomes hotter and denser this way. Some eventually become too hot and dense that there is an atomic explosion. The nebula turns into a fireball and the first atomic fusion starts. A star has been born! Next, another super main thing in space, the planets! About 4.6 billion years ago, earth was born. It took billions of years to resemble to what it is today. Earth and the other planets were created by a giant cloud of rock and dust that was trillions of miles wide. This cloud of rock and dust were orbiting around the sun due to the gravitational pull. Bigger rocks took in smaller rocks making a massive ball of rock and dust. After a while, the ball is big enough to resemble a planet! Keep reading to learn more!

I hope you’re interested because if not, you will be! When you chose someone for knowledge about space, they don’t only need to know about the space, they need to compare it and know the difference. Here goes, some planets are made of rock containing common minerals such as feldspar. Others are made of trapped helium, hydrogen, and water. Satellites/moons are composed of rock and soil. And stars of course are made of mostly hydrogen and helium. Now that’s comparing! Since I’ve talked about the stars and the planets, I will show my knowledge about the moon. It is the second brightest object in the sky, after the sun. It orbits around the earth once per month. The angle between earth, the moon, and the sun changes; we see this cycle as the phases of the moon. It takes our moon about 29.5 days to completely cycle through all 8 phases. The first phase is the new moon (can not see the moon), next, waxing crescent (part of the moon is beginning to show), first quarter (half the moon is visible), waxing gibbous (most of the moon is visible), full moon (entire face of the moon shows), waning gibbous (see less and less each night), last quarter (see exactly half of the moons surface), waning crescent (see a super small part of the moon).



The phases of the moon



Speaking of moons, I’m going to talk about solar and lunar eclipse. Solar eclipse’s occurs when the moon is revolving in its orbit around the earth and comes between the sun and the earth. The moon blocks the light of the sun to the earth and a shadow of the moon is cast over the earth’s surface. Lunar eclipse’s is an event that occurs 2 to 4 times per year. It’s when the earth blocks all of the sun’s rays from reaching the moon, creating a shadow across it. The moon is a very interesting topic to talk about, but there are effects from it to our earth. Its position around the earth allows it to reflect the suns light into our night. The moons orbit lasts about a month giving us different levels of light each night. The new moon has very little light to offer, and the full moon provides the best lighting. Another effect from the moon comes from the gravitational pull on the earth, high tides. Tides occur in large lakes and are created when the earth and the moon are attracted to each other like magnets. The moon tries to pull at anything on the earth to bring it closer. But, the earth is able to hold on to everything except water. Since water is moving, the earth cannot hold on to it which allows the moon to pull at it, creating high tides. Each day there are about 2 high tides and 2 low tides. The ocean is constantly moving back and forth.

Now that you finished reading, I really hope you enjoyed. See I wrote about every single one of your expectations I better get chosen to go to mars!

Sincerely

Joy