IN THE MOUNTAINS
Are they just big hunks of rock? No way. Mining
operations see mountains as the source of their ore.
They might be looking for iron, silver, gold, diamonds.
whatever. All mining requires a hole in the mountain,
blowing up part of the moun
We started talking about weathering in the erosion sections. Mechanical
weathering is the process of breaking big rocks into little ones. This process
usually happens near the surface of the planet. Temperature also affects the
Humans need a lot of water. The water isn't to drink or even use in our toilets
but to grow our crops. If you live in California, you hear about
droughts and rationing water. It's funny that they ask the cities to ration water
when the f
A COZY BLANKET AROUND THE
The atmosphere looks like a blanket of gas when you look at it from space or
the ground. When scientists started to examine the atmosphere, they noticed
that there were different parts and different layers. There are layers
EMITTANCE AND EQUATIONS?
Emittance happens when an object (like the Sun) creates electromagnetic
radiation of some type (light, x-rays or heat). Everything in the universe made
of matter emits some kind of radiation. The amount of emission depends of
IN THE FORESTS
Forests are an easy starting point. These are dense ecosystems with a large
amount of plant life. Types include tropical and temperate forests. Some
have a lot of rain and others have seasonal moisture. Humans like the land
and the trees. R
REAL WORLD EXPLANATIONS
So you have a hot day. Chances are the pressure will rise when it gets hotter.
The molecules are getting more excited and have nowhere to go. They wind
up pushing on everything with a greater force. Let's say you're up in the sky.
MOVING AND FLOWING
We've been looking at the way ecosystems are always in movement. Whether
we look at the food chain or the growth and reduction of populations,
ecosystems are always shifting and moving. The same idea goes for the
pieces that keep everyt
Pressure is the force of one object pushing on another. In the case of the air
around you, it is the force of all the air molecules hitting your body. When you
are standing on the ground, the pressure is the weight of all the air above you