rain, snow,sleet and hail are all examples.

Soil provides this important ingredient for plant growth.

tides are caused by the pull of this on the Earth's oceans.

a ramp is an example of this type of simple machine

the three states of matter

the origin of energy that drives the water cycle.

This portion of soil holds a lot of water.

When the moon appears to be a bright circle, it is in this phase.

this makes raising a flag up a flagpole much easier.

These physical properties of objects do not change when the object becomes smaller

during evaporation, a puddle of water becomes this.

the top layer of soil.

Day and night are caused by this movement of the Earth.

a screw is actually one of these wrapped around a post

the smallest part of any material

when warm air meets cooler air, this part of the water cycle takes place to form a cloud.

decayed twigs, leaves or animals make up this part of soil.

The Earth takes one year to make one of these around the sun.

two simple machines found in scissors

hydrogen and oxygen are examples of this type of matter

a natural or manmade lake used for the storage of water.

very fine part of soil, smaller particles then sand

seasons are caused by the Earth's revolution around the sun and by this.

The center of a seesaw is this part of a lever

machines which help scientists see portions of items which cannot be seen with the naked eye