What is a nebula? A nebula is a cloud of dust particles and gases in space. Nebula means cloud in Latin. There are 2 general types of nebulae: diffuse nebulae and planetary nebulae. Diffuses nebulae are the larger of the 2 types and may occur near an extremely hot, bright star. The intense ultraviolet light from the star energizes the gas atoms of the nebula and enables the mass to emit light. Thsis is an emission nebulae. A planetary nebulae are ball-like clouds that surround certain stars.They form when a star collapses and throw the outer layers of its atmosphere.
5/28/10
What is a supernova? A super nova is basically the explosion of a star. The super nova increases he star's brightness is increased by 20 times and the bulk of the star's mass us blown away at a very high velocity. There are 2 dinstinct sources that cause a supernova. The first sources is when as star is halting its generation of fusion energy from fusing the nuclei of atoms in its core making ti collapse under the force of its own gravity. The 2nd is when a whtie dwarf star accumulates material fro another nearby star until it nears it Chandrasekhar limit and undergoes runawaynuclear fusion in its interior, ultimately leadign to its destruction.
5/14/10
What is the Sun made of and is it the largest star? Basically, the Sun is entirely made up of gas. But, it contains Plasma. The part of the Sun we see is 10,000 degrees F. Temperatures in the Sun's cores reach over 5 million K. The energy of the Sun comes form nuclear fusin deepd inside the Sun's core. In a fusion reaction, two atomic nuclei join together creating a new nucleus and that fusion creates energy by converting nulcear matter into energy. It is composed of hydrogen and helium and other elements(oxeygen, carbon, and nitrogen). But, the Sun isn't the largest star known. The largest star that is known is VY Canis Major.
5/7/10
What is a black hole and how are they made? Well, a black hole is really the collapse of a giant red star that is dying. They are concentrated areas of mass so immense that the massive force of gravity denies anything within a certain area of its passing. The name "black hole" was given to it because even light can't pass trhoguh it. So, you can't actually see black hole, but you'd be able to see the effect it mgith have on a space object.
4/26/10
Why do we have a Moon and why does it orbit Earth? Well, the Moon actually orbits the Earth because Earth's gravitaional pull is strong enough to keep the Moon in its orbit as the Sun does with the planet and various space objects. The Moon is about 4 times smaller than Earth. Nobody knows how we got the Moon. There have been theories that the Moon is a chunk of Earth that somehow got seperated from Earth. Others are that the Moon was romaing around the galaxy until it got stuck in Earth's orbit. But, we might never know what is the origin of the Moon.
4/23/10
What is the ozone layer and why do we need it? The ozone layer acts as a thin shield high in the sky. IT protects the Earth and people from the Sun's UV light. Ozone is a natural gas that is found in the troposphere and stratosphere. The ozone absorbs some of the Sun's UV light to give enough heat for Earth. But, the ozone layer would be depleted by chloroflurocarbons(DFC) that is used in industries. As CFC is carried up in the sky, the UV light breaks them apart and it releases chlorine atoms that as many ozone molecules.
4/14/10
What are gamma rays? Gamma rays have the smallest wavelength, but it has the most energy of any other wave in the EM Spectrum. It is the most energetic form of light and is is produced by the hottest regions of the universe. Super nova explosions, neutron stars, and and black holes are all sources of celestial gamma rays. The way we could see gamma rays are by using gamma ray telescopse that us a process known as Compton shattering where a gamma ray would strike an electron and lose energy. Gamma ray bursts release more energy than the Sun would emit in its 10 billion ear life time. Being near a gamma burst can harm you.
4/9/10
What is UV light and how it it used? UV light is short for ultraviolet light. Its wavelength is shorter than visible light but longer then x-ray waves. UV light is beyond violet on the EM spectrum. In popular culture, UV light was used as part light bexcasue of thwe way it made textiles and clothes. IT is alos used in security. SEnsitive documents such as currency, credit cards, driver's liscense, and passports have invisible symbols on them that show up under UV light. But, it is also dangerous to human. It can disrupt the replication of DNA during cell visison causing skin cancers and other disease.
4/2/10
What is the EM spectrum and which waves could we see? The EM sepctrum is the rate of all 7 electromagnetic waves. Teh 7 waves are: radio waves, microwaves, infrared waves, visible light waves, ultraviolet waves, x-ray waves, and gamma rays. The only wave we could see is the visible light waves. The Sun produces light that goes to Earth. The light will hit an object and bounce off. This light will hit your eyes. An image will be produced that allows you to see what is aroudn you. Without visible light waves, we wouldn't be able to see all the objects around us.
3/25/10
What are echoes and how do they travel? First, we get to the basics. Echoes are sound waves that travel as longitudinal waves. So, basically, if you speak, then you hear that sound. However, if the sound that travels from your vocal cords into the air, but it hits the walls of a cave or a building, then it bounces back. The wall/building won't absorb your sound waves, so it bounces back making an echo.
3/18/10
We all know that heat comes from the Sun. It the the major heat source. But, there is also something else that causes heat. It is a force called friction. If you look at objects with a closer vision, then they are made up of atoms and moelcuels. Everything thing on earth is made from atoms and molecules. When they move past each other, then the atoms are rubbing against each other. This causes friction. As they keep rubbign against each other, then heats starts coming. If you rub your hands against each other and felt it against your face, then your hands will feel warmer than they were before. This is an example of friction.
3/10/10
Today, I learned about infrared. The basic thing that infrared detects is temperature. The human body tmperature would be averaged 98.6 F. In infrared vision, the more heat the object has it appears in bright colors such as orange and red. Human and warm-blooded animals would have a high temperature. Cold-blooded animals appear to have dull color such as blue and purple. Infrared vision would be useful for many things from the Search and Rescue to the army.
3/4/10
Riding a bike is a fun thing to do on a sunny day. But, a bimke is a compound machine. This means that the bike has 2 or more simple machiens. But, a bike has 2 simple machines. The first is the wheel and axle. This allows the bike to move wherever you want it to move. The second is the gears that help transfer energy from the pedals to the wheel and axle.
2/23/10
Today, I walked on the stair. The stairs are certainy useful things that you could use from get to one level to another. The stair are an inclined plane. IT is a ramp, but is has steps which makes it easier to walk up without slipping. It allows you to use less effort to get up or down to a level. This would be better than jumping or falling down to a level which you wouldn't want to do.
2/18/10
A fan is certainly useful. It brings in a cool breeze of air. But how does it work? When you start the fan, then its inclined blades start spinning. The blades spin through the air forcing the air ahead of him. As all the blades spin on a continous basis, the result of it is a moving air stream. So, basically the fan takes the air from its behind and pushes it out forward.
2/12/10
Did you hear about the earthquake in Haiti? It was horrible, but have you wondered what causes earthquakes? The answer is faulting. faulting is a sudden movement of a rock along a rupture surface. But this has to do with plate tectonics which are moving in a very slow motion. When 2 plates rub against each other while one plate isn't smooth, then a strain happens. As the strain builds up, the ruptured surface comes to a point where it can't bend anymore nd breaks out. The earthquake is the shaking that radiates out from the breaking rock.
2/2/10
1/28/10
Hot Chocolate is the best. When I was making hot chocolate, then I had to mix the hot choclate powder in the hot water. This reminded me of mixtures. the hot choclate would be a mixture. Then, there are 2 mixtures. there is a homegenous mixture and heterogenous mixture. The hot choclate woudl be a homogenous mixture.
1/21/10
TV. This is one thing mankind could never survive without. We all love TV, but how does it work? How do we get those channels on TV? Well, here is the answer. Satellites send wirelessly transmitted electromagnetic waves to your Tv. Your TV recieves these signals and conversts the waves into sound and light energy, so we could watch TV.
1/13/10
Have you ever went bowling? It must be so fun. Well, even bowling has science in it. First, you have food which make chemical energy. That allows you to pick up the bowling ball. So as you pick the bowling ball, the potential energy is increasing. When you let go of the bowling ball, then its potential energy is decreasing and it kinetic energy is increasing. So, as its rolling, it has kinetic energy.
1/6/10
I'm not such a fan of cars, but I couldn't help noticing how cars move. When a car isn't mvoing, then Newton's 1st Law of Motion known as inertia is in motion. Then, the car starts moving. The reason why the car is moving is because of the tires. Energy is making the tires move which makes the car move forward. This would be Newton's 3rd Law of Motion known as Action-Reaction Force. The tires that are moving is the action and when the car moves forward, then it is the reaction to the tires moving.
12/18/10
When I was playing soccer with my brother, then I noticed that the ball was moving whenever a force acted on it. It made me remind of the Newton’s first law of motion, Inertia,. The ball wouldn’t move until somebody kicked it. Then, it would keep on going until somebody or something didn’t stop it. This was known as inertia. A ball stays still until a force acts upon it and it doesn’t stop until another force acts on it.
6/4/10
What is a nebula? A nebula is a cloud of dust particles and gases in space. Nebula means cloud in Latin. There are 2 general types of nebulae: diffuse nebulae and planetary nebulae. Diffuses nebulae are the larger of the 2 types and may occur near an extremely hot, bright star. The intense ultraviolet light from the star energizes the gas atoms of the nebula and enables the mass to emit light. Thsis is an emission nebulae. A planetary nebulae are ball-like clouds that surround certain stars.They form when a star collapses and throw the outer layers of its atmosphere.5/28/10
What is a supernova? A super nova is basically the explosion of a star. The super nova increases he star's brightness is increased by 20 times and the bulk of the star's mass us blown away at a very high velocity. There are 2 dinstinct sources that cause a supernova. The first sources is when as star is halting its generation of fusion energy from fusing the nuclei of atoms in its core making ti collapse under the force of its own gravity. The 2nd is when a whtie dwarf star accumulates material fro another nearby star until it nears it Chandrasekhar limit and undergoes runawaynuclear fusion in its interior, ultimately leadign to its destruction.5/14/10
What is the Sun made of and is it the largest star? Basically, the Sun is entirely made up of gas. But, it contains Plasma. The part of the Sun we see is 10,000 degrees F. Temperatures in the Sun's cores reach over 5 million K. The energy of the Sun comes form nuclear fusin deepd inside the Sun's core. In a fusion reaction, two atomic nuclei join together creating a new nucleus and that fusion creates energy by converting nulcear matter into energy. It is composed of hydrogen and helium and other elements(oxeygen, carbon, and nitrogen). But, the Sun isn't the largest star known. The largest star that is known is VY Canis Major.5/7/10
What is a black hole and how are they made? Well, a black hole is really the collapse of a giant red star that is dying. They are concentrated areas of mass so immense that the massive force of gravity denies anything within a certain area of its passing. The name "black hole" was given to it because even light can't pass trhoguh it. So, you can't actually see black hole, but you'd be able to see the effect it mgith have on a space object.4/26/10
Why do we have a Moon and why does it orbit Earth? Well, the Moon actually orbits the Earth because Earth's gravitaional pull is strong enough to keep the Moon in its orbit as the Sun does with the planet and various space objects. The Moon is about 4 times smaller than Earth. Nobody knows how we got the Moon. There have been theories that the Moon is a chunk of Earth that somehow got seperated from Earth. Others are that the Moon was romaing around the galaxy until it got stuck in Earth's orbit. But, we might never know what is the origin of the Moon.4/23/10
What is the ozone layer and why do we need it? The ozone layer acts as a thin shield high in the sky. IT protects the Earth and people from the Sun's UV light. Ozone is a natural gas that is found in the troposphere and stratosphere. The ozone absorbs some of the Sun's UV light to give enough heat for Earth. But, the ozone layer would be depleted by chloroflurocarbons(DFC) that is used in industries. As CFC is carried up in the sky, the UV light breaks them apart and it releases chlorine atoms that as many ozone molecules.4/14/10
What are gamma rays? Gamma rays have the smallest wavelength, but it has the most energy of any other wave in the EM Spectrum. It is the most energetic form of light and is is produced by the hottest regions of the universe. Super nova explosions, neutron stars, and and black holes are all sources of celestial gamma rays. The way we could see gamma rays are by using gamma ray telescopse that us a process known as Compton shattering where a gamma ray would strike an electron and lose energy. Gamma ray bursts release more energy than the Sun would emit in its 10 billion ear life time. Being near a gamma burst can harm you.4/9/10
What is UV light and how it it used? UV light is short for ultraviolet light. Its wavelength is shorter than visible light but longer then x-ray waves. UV light is beyond violet on the EM spectrum. In popular culture, UV light was used as part light bexcasue of thwe way it made textiles and clothes. IT is alos used in security. SEnsitive documents such as currency, credit cards, driver's liscense, and passports have invisible symbols on them that show up under UV light. But, it is also dangerous to human. It can disrupt the replication of DNA during cell visison causing skin cancers and other disease.4/2/10
What is the EM spectrum and which waves could we see? The EM sepctrum is the rate of all 7 electromagnetic waves. Teh 7 waves are: radio waves, microwaves, infrared waves, visible light waves, ultraviolet waves, x-ray waves, and gamma rays. The only wave we could see is the visible light waves. The Sun produces light that goes to Earth. The light will hit an object and bounce off. This light will hit your eyes. An image will be produced that allows you to see what is aroudn you. Without visible light waves, we wouldn't be able to see all the objects around us.3/25/10
What are echoes and how do they travel? First, we get to the basics. Echoes are sound waves that travel as longitudinal waves. So, basically, if you speak, then you hear that sound. However, if the sound that travels from your vocal cords into the air, but it hits the walls of a cave or a building, then it bounces back. The wall/building won't absorb your sound waves, so it bounces back making an echo.3/18/10
We all know that heat comes from the Sun. It the the major heat source. But, there is also something else that causes heat. It is a force called friction. If you look at objects with a closer vision, then they are made up of atoms and moelcuels. Everything thing on earth is made from atoms and molecules. When they move past each other, then the atoms are rubbing against each other. This causes friction. As they keep rubbign against each other, then heats starts coming. If you rub your hands against each other and felt it against your face, then your hands will feel warmer than they were before. This is an example of friction.3/10/10
Today, I learned about infrared. The basic thing that infrared detects is temperature. The human body tmperature would be averaged 98.6 F. In infrared vision, the more heat the object has it appears in bright colors such as orange and red. Human and warm-blooded animals would have a high temperature. Cold-blooded animals appear to have dull color such as blue and purple. Infrared vision would be useful for many things from the Search and Rescue to the army.3/4/10
Riding a bike is a fun thing to do on a sunny day. But, a bimke is a compound machine. This means that the bike has 2 or more simple machiens. But, a bike has 2 simple machines. The first is the wheel and axle. This allows the bike to move wherever you want it to move. The second is the gears that help transfer energy from the pedals to the wheel and axle.2/23/10
Today, I walked on the stair. The stairs are certainy useful things that you could use from get to one level to another. The stair are an inclined plane. IT is a ramp, but is has steps which makes it easier to walk up without slipping. It allows you to use less effort to get up or down to a level. This would be better than jumping or falling down to a level which you wouldn't want to do.2/18/10
A fan is certainly useful. It brings in a cool breeze of air. But how does it work? When you start the fan, then its inclined blades start spinning. The blades spin through the air forcing the air ahead of him. As all the blades spin on a continous basis, the result of it is a moving air stream. So, basically the fan takes the air from its behind and pushes it out forward.2/12/10
Did you hear about the earthquake in Haiti? It was horrible, but have you wondered what causes earthquakes? The answer is faulting. faulting is a sudden movement of a rock along a rupture surface. But this has to do with plate tectonics which are moving in a very slow motion. When 2 plates rub against each other while one plate isn't smooth, then a strain happens. As the strain builds up, the ruptured surface comes to a point where it can't bend anymore nd breaks out. The earthquake is the shaking that radiates out from the breaking rock.2/2/10
1/28/10
Hot Chocolate is the best. When I was making hot chocolate, then I had to mix the hot choclate powder in the hot water. This reminded me of mixtures. the hot choclate would be a mixture. Then, there are 2 mixtures. there is a homegenous mixture and heterogenous mixture. The hot choclate woudl be a homogenous mixture.
1/21/10
TV. This is one thing mankind could never survive without. We all love TV, but how does it work? How do we get those channels on TV? Well, here is the answer. Satellites send wirelessly transmitted electromagnetic waves to your Tv. Your TV recieves these signals and conversts the waves into sound and light energy, so we could watch TV.
1/13/10
Have you ever went bowling? It must be so fun. Well, even bowling has science in it. First, you have food which make chemical energy. That allows you to pick up the bowling ball. So as you pick the bowling ball, the potential energy is increasing. When you let go of the bowling ball, then its potential energy is decreasing and it kinetic energy is increasing. So, as its rolling, it has kinetic energy.
1/6/10
I'm not such a fan of cars, but I couldn't help noticing how cars move. When a car isn't mvoing, then Newton's 1st Law of Motion known as inertia is in motion. Then, the car starts moving. The reason why the car is moving is because of the tires. Energy is making the tires move which makes the car move forward. This would be Newton's 3rd Law of Motion known as Action-Reaction Force. The tires that are moving is the action and when the car moves forward, then it is the reaction to the tires moving.
12/18/10
When I was playing soccer with my brother, then I noticed that the ball was moving whenever a force acted on it. It made me remind of the Newton’s first law of motion, Inertia,. The ball wouldn’t move until somebody kicked it. Then, it would keep on going until somebody or something didn’t stop it. This was known as inertia. A ball stays still until a force acts upon it and it doesn’t stop until another force acts on it.