Narrator: Listen to part of a lecture in a geology class. Professor: Hi, class, let’s get started. Um, last time we finished up the section of coal, so we have just two fossil fuels left to talk about. Those are petroleum and natural gas. ...
How does it affect(影响) us? T he water cycle is very importantto our existence. A cycle is another word for circle. T he water cycle is like one continuous(连续的) circle. Water can be found in the form of liquid (drinking water), gas (vapor or steam), or a solid (ice or ...
Does chemical in gas mean cleaner air, dirtier water?
It's in fact the burning of what we call "fossil carbon" that creates the imbalance: fossil fuels, coal, oil, natural gas. These substances are all mined. We have to dig them up or drill a well to release them. And this is carbon that was in the atmosphere millions of years ago....
Have you ever heard of dry ice? Dry ice is made by freezing a gas. It is quite different from ordinary ice, which is simply frozen water.Dry ice was first manufactured in 1925. It has fulfilled the hopes of its inventor. It can be used for making artificial fog in the movies. When...
Explain why gasoline does not dissolve in water Why is SO2 a gas at room temperature? Why is gas exchange important in plants? Why are trace gases important? Why does warm air rise? Why does a hot air balloon rise when it is heated?
Step-by-Step Text Solution:1. Understanding Water Gas: Water gas is a specific type of gas that is produced through a chemical reaction involving water and carbon-based materials.2. Components of
How can we use energy today and know we will have enough to go around in the future? We can choose alternate, or replacement, energy resources. It takes the earth millions of years to create coal, oil, and gas. They are nonrenewable resources. Solar energy, wind energy and water energy...
But the bricks were water molecules, well, this top layer would be the quasi-liquid layer, and it wouldn't be completely frozen. Does that make sense? So finally, we get to the connection between snowflakes and ozone. Ozone is a gas found in the atmosphere of Earth. ...
Though we may not notice it, almost all the air around us is moist because it contains water in the form of vapor.虽然我们可能注意不到，我们周边的空气几乎都是潮湿的，因为空气里有水分并以水蒸气的形式存在着。You can't see the water vapor, because it's a gas, but it is still there.由...