Show:
Simple Machines
Natural Events
Water Cycle
Energy
Soil and Conservation
100
What is a pulley?
A wheel and axle with a rope around the wheel
100
How long does it take for the earth to make one rotation?
24 hours (one day)
100
How does water get from the ocean to the air?
Evaporation
100
What does the term NONRENEWABLE RESOURCES mean?
sources of energy that we cannot replace
100
What does CONSERVE or CONSERVATION mean?
to save and protect natural resources
200
Simple machines make work _________ .
easier
200
Name the four main phases of the moon.
New moon, first quarter, full moon, last quarter
200
Name the four types of precipitation.
rain, sleet, hail, snow
200
Energy can be created by the force of flowing ________ .
water
200
What is erosion?
The movement of rocks, soil, and minerals from one area to another. (the top soil gets carried away)
300
What is a wedge used for?
It splits things apart.
300
What season has the most direct rays of the sun?
Summer
300
What is the name of water droplets that form on the outside of a cool glass on a hot day?
condensation
300
Another name for FOSSIL FUELS is ____________ .
nonrenewable resources
300
What are the two causes of erosion?
wind and water
400
What kind of simple machine would be used to raise a flag on a flag pole?
a pulley
400
What is the definition of a cycle?
a continuing sequence of events (It goes on forever in a pattern.)
400
What drives the water cycle (makes it work)?
The sun
400
Name the three main renewable resources.
water, wind, sun (solar)
400
How do plants stop erosion?
The roots keep the soil from being carried away by wind or water.
500
Name the six simple machines.
1. screw 2. pulley 3. wedge 4. wheel and axle 5. lever 6. inclined plane
500
What invisible force pulls two objects together?
gravity
500
What kind of weather causes a flood?
a hurricane (heavy rain for a long period of time)
500
What does RENEWABLE RESOURCE mean?
Resources that never run out
500
Which layer of soil do most plants grow in?
top soil