What is Science?
Exploring Earth's Surface
As scientists seek to under stand the natural world they use these skills:
Observing is using your senses to gather information.
Inferring is making an educated guess based on observation.
Predicting is making a forecast of what will happen in the future based on past evidence.
Unlike a theory, a scientific law describes a pattern in nature, but does not provide an explanation for it.
A hypothesis is a possible explanation for a set of observations or answer to a scientific question.
The earth system has three main parts
Matter makes up everything in the univers.
Energy can be transferred from place to place by moving objects, waves, or heat flow.
Thermal energy is the total energy of all of the atoms that make up an object.
Topography is the shape of the land.
The topography of an area includes these three things:
The elevation ia the hight above sea level of a part of Earth's surface.
The releif is the difference in elevation between the highest and lowest points.
A landform ia a feature of topography such as a hill or valley.
There are three main types of landforms:
The plains are nearly flat or gently rolling land with a low releif.
Mountains have high elevation and high releif.
Plateaus have a high elevation and a more or less level surface.