That depends. Is it a big cloud, or a little cloud? What kind of cloud?
I don't know. I am going to guess that it weighs a lot. (Probably some thousand pounds or so, depending on how large the cloud is...)
Water = eight pounds a gallon
Pint of water = 1 lb
We need to know what kind of cloud it is, how large it is, etc.
So it depends!
Cloud Making Activity- (burner)
The lit paper put ash into the small containers air. When it was heated, this created a temperature difference between the ice at the top and the bottom of the container which was heated. This caused the water at the bottom of the container to form a cloud near the top.
Cloud Making Activity- (bottle)
The lit paper put ash into the gatorade bottle. When we started squeezing the bottle, we were creating rapid pressure changes. When you squeezed the bottle, there was no cloud, but when you let go, the cloud appeared. The water was forming clouds around the ash particles. Pretty cool.
Monday, April 11, 2011
Wednesday, April 6, 2011
Air Pressure
The effect of air pressure on a can is pretty interesting. We saw a pop can getting immediately crushed by moving it from a hot surface to a bowl of icy water, as the air pressure was expanding when it was hot, and the cold condensation inside the pop can crushes it. The same thing was done with a 55 gallon drum, although it took longer.
Materials for hardboiled egg experiment:
paper
bottle
hardboiled egg
napkins/paper towel
matches
Prediction: Egg gets sucked into bottle, lands on flaming paper, and the classroom smells like burning eggs for the next week.
The egg did get sucked into the bottle! And it smelled terrible.
Why did it happen? Because the flame inside the bottle was expanding the air pressure through heat, and when it went out, the air was cooling, and that made the air contract. Which sucked in the egg.
Materials for hardboiled egg experiment:
paper
bottle
hardboiled egg
napkins/paper towel
matches
Prediction: Egg gets sucked into bottle, lands on flaming paper, and the classroom smells like burning eggs for the next week.
The egg did get sucked into the bottle! And it smelled terrible.
Why did it happen? Because the flame inside the bottle was expanding the air pressure through heat, and when it went out, the air was cooling, and that made the air contract. Which sucked in the egg.
Wednesday, March 30, 2011
Pizza is like the Earth's crust because...
The lithosphere is the cheese and the toppings. The cheese is the ocean lithosphere, and the toppings are the continental lithosphere.
The asthenosphere is the pizza sauce. The asthenosphere is known as the 'weak sphere' and can move independently of the lithosphere (like your cheese and toppings can sometimes slide off your pizza)!
The mesosphere is the crust!
The asthenosphere is the pizza sauce. The asthenosphere is known as the 'weak sphere' and can move independently of the lithosphere (like your cheese and toppings can sometimes slide off your pizza)!
The mesosphere is the crust!
Tuesday, February 22, 2011
Edible Geology!
We made different models in class to demonstrate different kinds of rocks.
Our group made rice krispie treats, which were an example of sedimentary rock. Sedimentary rock is a rock that is formed by a bunch of sediment, a bunch of particles, stuck together. This is the same as rice krispie treats, how the bunches of rice krispies stick together.
The food example of igneous rocks were the seafoam and peanut brittle. The ingredients to make these candies are the same, but the difference in the candy comes from how they cool (just like igneous rocks!). The seafoam demonstrates intrusive igneous rocks, cooling at a slower rate so there is crystallization. Peanut brittle is formed by the sugar cooling very quickly, which makes the shiny brittle candy, just like extrusive igneous rocks.
The butterfinger candy bars that we looked at were an example of metamorphic rocks. One of the best indicators that a rock is metamorphic is that they are foliated, they have these tightly packed layers. If you look at the inside of a butterfinger, the candy has these compact layers, just like metamorphic rocks.
Who knew learning about rocks could be so delicious!
Our group made rice krispie treats, which were an example of sedimentary rock. Sedimentary rock is a rock that is formed by a bunch of sediment, a bunch of particles, stuck together. This is the same as rice krispie treats, how the bunches of rice krispies stick together.
The food example of igneous rocks were the seafoam and peanut brittle. The ingredients to make these candies are the same, but the difference in the candy comes from how they cool (just like igneous rocks!). The seafoam demonstrates intrusive igneous rocks, cooling at a slower rate so there is crystallization. Peanut brittle is formed by the sugar cooling very quickly, which makes the shiny brittle candy, just like extrusive igneous rocks.
The butterfinger candy bars that we looked at were an example of metamorphic rocks. One of the best indicators that a rock is metamorphic is that they are foliated, they have these tightly packed layers. If you look at the inside of a butterfinger, the candy has these compact layers, just like metamorphic rocks.
Who knew learning about rocks could be so delicious!
Wednesday, February 16, 2011
Mixtures & Bonds
Mixtures - a mix of two substances that are mixed together but not combined chemically. The ingredients can be removed from the mixture afterwards.
Bonding - when the atom in separate things mixed together form chemical compounds, where the electrons are shared, and they become something different than the initial ingredients added.
We did an exercise in class where we did two different kinds of experiments. To examine mixing, we combined cornstarch and water. While the cornstarch and water mixed together and became thicker and harder, it was still just a mixture, and nothing chemically happened. To examine bonding, we mixed Elmer's glue with hot water, shook it for a while, and then mixed in a powdered borax soap. It became this flubbery glue - obviously a chemical change happened.
We realize that once the water has evaporated from the cornstarch solution, we can see the cornstarch in the glass. This is part of the mixture, you can separate the ingredients. We will never be able to pull the Elmer's glue back out of the goop that we made, therefore, a bond happened.
Bonding - when the atom in separate things mixed together form chemical compounds, where the electrons are shared, and they become something different than the initial ingredients added.
We did an exercise in class where we did two different kinds of experiments. To examine mixing, we combined cornstarch and water. While the cornstarch and water mixed together and became thicker and harder, it was still just a mixture, and nothing chemically happened. To examine bonding, we mixed Elmer's glue with hot water, shook it for a while, and then mixed in a powdered borax soap. It became this flubbery glue - obviously a chemical change happened.
We realize that once the water has evaporated from the cornstarch solution, we can see the cornstarch in the glass. This is part of the mixture, you can separate the ingredients. We will never be able to pull the Elmer's glue back out of the goop that we made, therefore, a bond happened.
Thursday, January 27, 2011
Chapter 16 Questions.
2, 5, 10, 22, 25
2. The most basic method of calculating stellar differences is stellar parallax, the measure of the slight back-and-forth shift in a nearby star's position due to the orbit of Earth. The closer the star is to Earth, the larger it's apparent motion will be. If the star is very far away from Earth, it's parallax, or movement, will be very slight.
5. The color of a star tells us the temperature that the star is burning. A bright blue star is burning very hot, with surface temperatures above 30,000 K. Yellow stars, such as our own, burn with medium temperature for a star, at about 5000-6000 K on the surface. Red stars are the coolest stars, with surface temperatures less than 3000 K.
10. A star spends the most of it's lifetime in the middle of an HR diagram, as 90% of stars are main-sequence stars, stars that have a normal lifespan. (Our sun is a main-sequence star, falling in the middle of the HR diagram.)
22. The three types of galaxies are; spiral galaxies, elliptical galaxies, and irregular galaxies. Spiral galaxies are usually disk shaped, with more stars near the middle of the galaxy, and have arms or lines of stars extending from the clump of stars in the middle. Elliptical galaxies are the most common, with an elliptical shape, that are nearly spherical. Irregular galaxies lack symmetry, and are more rare, accounting for 10% of known galaxies.
25. We still can see minor microwaves of energy left over from the Big Bang, and from it NASA has even managed to compose a picture of where this energy was distributed in the universe. While the Big Bang theory can never be 'proved' these findings provide significant evidence to support it.
2. The most basic method of calculating stellar differences is stellar parallax, the measure of the slight back-and-forth shift in a nearby star's position due to the orbit of Earth. The closer the star is to Earth, the larger it's apparent motion will be. If the star is very far away from Earth, it's parallax, or movement, will be very slight.
5. The color of a star tells us the temperature that the star is burning. A bright blue star is burning very hot, with surface temperatures above 30,000 K. Yellow stars, such as our own, burn with medium temperature for a star, at about 5000-6000 K on the surface. Red stars are the coolest stars, with surface temperatures less than 3000 K.
10. A star spends the most of it's lifetime in the middle of an HR diagram, as 90% of stars are main-sequence stars, stars that have a normal lifespan. (Our sun is a main-sequence star, falling in the middle of the HR diagram.)
22. The three types of galaxies are; spiral galaxies, elliptical galaxies, and irregular galaxies. Spiral galaxies are usually disk shaped, with more stars near the middle of the galaxy, and have arms or lines of stars extending from the clump of stars in the middle. Elliptical galaxies are the most common, with an elliptical shape, that are nearly spherical. Irregular galaxies lack symmetry, and are more rare, accounting for 10% of known galaxies.
25. We still can see minor microwaves of energy left over from the Big Bang, and from it NASA has even managed to compose a picture of where this energy was distributed in the universe. While the Big Bang theory can never be 'proved' these findings provide significant evidence to support it.
Wednesday, January 26, 2011
Ch. 15 Questions.
3,4,6,7,11,12.
3. Copernicus made a huge change to the Ptolemaic model of the solar system, so much that it was not called the Ptolemaic model afterward. He proposed the heliocentric model of the solar system, which has the sun at the center.
4. He observed stars and planets for twenty years before the invention of the telescope, and came up with the idea of stellar parallax, the idea that around the earth's orbit, nearer stars should appear to shift more than more distant stars.
6. Galileo studied the sun, and seeing the sun spots across the surface changing, decided that the sun was rotating. This fact supported Copernicus' idea that the Earth revolves around the sun.
7. Sir Isaac Newton proposed that an object in motion wants to stay in motion unless acted upon by an outside force, or inertia, and the law of universal gravitation. These affect how the planets move.
11. Planets are thought to be made up of gases, rocks, and ices. The terrestrial planets are made up of mostly rock and ice, and the jovian planets are made of gases. Jovian planets have lower densities, while terrestrial planets are higher densities.
12. There was the big bang, an unbelievably large explosion, which sent matter flying through the universe. When the matter, the gases, began to condense, they formed a nebular cloud. Then the nebular cloud was acted on by some outside force, and started to further condense. It became a flat disk shape with a large concentration at the center (which would become the sun). Matter starts forming clumps, called planetesimals. The planetesimals grew into protoplanets, which then became planets.
3. Copernicus made a huge change to the Ptolemaic model of the solar system, so much that it was not called the Ptolemaic model afterward. He proposed the heliocentric model of the solar system, which has the sun at the center.
4. He observed stars and planets for twenty years before the invention of the telescope, and came up with the idea of stellar parallax, the idea that around the earth's orbit, nearer stars should appear to shift more than more distant stars.
6. Galileo studied the sun, and seeing the sun spots across the surface changing, decided that the sun was rotating. This fact supported Copernicus' idea that the Earth revolves around the sun.
7. Sir Isaac Newton proposed that an object in motion wants to stay in motion unless acted upon by an outside force, or inertia, and the law of universal gravitation. These affect how the planets move.
11. Planets are thought to be made up of gases, rocks, and ices. The terrestrial planets are made up of mostly rock and ice, and the jovian planets are made of gases. Jovian planets have lower densities, while terrestrial planets are higher densities.
12. There was the big bang, an unbelievably large explosion, which sent matter flying through the universe. When the matter, the gases, began to condense, they formed a nebular cloud. Then the nebular cloud was acted on by some outside force, and started to further condense. It became a flat disk shape with a large concentration at the center (which would become the sun). Matter starts forming clumps, called planetesimals. The planetesimals grew into protoplanets, which then became planets.
Subscribe to:
Posts (Atom)