When you pop popcorn, the kernels undergo this type of reaction, where matter changes to a different kind of matter, or changes color.
What is a chemical reaction?
100
This is the opposite of evaporation.
What is condensation?
100
Most of the planet, about 75% of it, in fact, is covered by this type of water.
What is salt water?
100
These "star-like" objects are not planets but orbit the sun nonetheless. There is a vast belt of them orbiting around the sun between Mars and Jupiter.
What are asteroids?
100
The type of cell seen here.
What is a plant cell?
200
When you chop up a log, you are forcing the wood to undergo this type of reaction, where matter stays the same, but changes in size, shape, or appearance.
What is a physical reaction?
200
This the opposite of condensation.
What is evaporation?
200
Katrina, Iris, Andrew and Hugo are names given to these types of huge and destructive storms that feed off moisture and are very destructive.
What are hurricanes?
200
This is the name of the fundamental force of nature that keeps the planets in orbit around the sun.
What is gravity?
200
The cycle seen here. You have one, too!
What is the life-cycle?
300
An icecube melting is an example of this kind of change, since no new matter is made.
What is a physical change?
300
This is the process through which water vapor present in the atmosphere falls back down to earth.
What is precipitation?
300
This is where you would find warmer ocean temperatures because of the angle at which the sunlight hits it. This explains why hurricanes form here.
What is the equator?
300
By looking at data, this type of scientist is able to tell us more about the cosmos, or universe. From the Latin for "star-namer" or "star-watcher".
What is an astronomer?
300
The type of cell seen here.
What is an animal cell?
400
When you fry up an egg for breakfast, your first meal requires this kind of change on the egg's part.
What is a chemical change?
400
Uneven temperature in the atmosphere causes these types of currents. They are what's responsible for wind.
What are convection currents?
400
These are the three R's, or what we can do to conserve water.
What are REDUCE, RE-USE, RECYCLE?
400
Our sun, which is at the center of our solar system, is composed mainly of these two gases which fuse and split continuously, creating huge amounts of energy and heat.
What are Hydrogen and Helium?
400
The type of current seen here, made when there is uneven heating.
What is a convection current?
500
Eating bad food, like a burrito that's been left out all night, for example, will cause these kinds of changes in your stomach!
What are chemical changes?
500
Climate is what we call the state of the atmosphere in a place over a long period of time. The state of the atmosphere at any given moment is called this. A shiver in my bones just thinking about it!
What is weather?
500
These are the names of three major river systems in our neck of the woods:
What are the Tuolomne, Stanislaus, and San Joaquin Rivers?
500
In 1994, one of these (shown here) barreled into the planet Jupiter after being caught by and ripped up by the giant planet's monstrous gravitational pull. They are like giant snowballs that orbit our sun in irregular and very long paths.