When an area of Earth's surface suddenly moves, a seismograph draws wavy lines. Which of the following MOST LIKELY happened? * 4 points
a volcanic eruption
a thunderstorm
a nuclear explosion
an earthquake
Why does deforestation cause erosion? *
4 points
The trees prevent the wind from blowing soil away.
The trees prevent water from moving soil away.
Both.
Neither.
How can a human cause erosion? *
4 points
Removing trees
Farming
Building roads
All of the above
Which of the following is the correct order? *
4 points
erosion, weathering, deposition
deposition, erosion, weathering
weathering, deposition, erosion
weathering, erosion, deposition
How do plant roots prevent erosion? *
4 points
It prevents the overflow of water.
It holds the soil in position and prevents it from being blown or washed away.
It moves extra rain and groundwater to another location.
It reduces the amount of water that flows into an area.
How does a storm drain prevent erosion? *
4 points
It prevents the overflow of water.
It holds the soil in position and prevents it from being blown or washed away.
It moves extra rain and groundwater to another location.
It reduces the amount of water that flows into an area.
How does a levee prevent erosion? *
4 points
It prevents the overflow of water.
It holds the soil in position and prevents it from being blown or washed away.
It moves extra rain and groundwater to another location.
It reduces the amount of water that flows into an area.
How does a dam prevent erosion? *
4 points
It prevents the overflow of water.
It holds the soil in position and prevents it from being blown or washed away.
It moves extra rain and groundwater to another location.
It reduces the amount of water that flows into an area.
Which of the following is an example of chemical weathering? *
4 points
Flowing water carving through rock over time.
Plant roots breaking rocks apart.
Oxidation
Heat causes rock to break apart.
Which of the following is not an example of a chemical change? *
4 points
Rotting
Digesting
Boiling
Tarnishing
What is a physical change? *
4 points
When the form or state of matter changes.
When matter changes to a different kind of matter.
When matter will not change.
When matter changes all the time.
What is a temporary magnet? *
4 points
A magnet that will keep its magnetic field without the use of an electric current.
A magnet that must have an electric current in order to have a magnetic field.
A magnet that will not pick up metal.
A magnet with four poles.
What is a conductor? *
4 points
Material that allows electricity to flow.
Material that does not allow electricity to flow.
Material that produces its own electricity.
Material that is burned up by electricity.
What is the function of the switch? *
4 points
Provides energy
Changes electricity to heat or light
Controls the flow of electricity
Makes the circuit blow up

Which of the following is an example of naturally occurring electricity? *
4 points
Television set
Pencil sharpener
Power plant
Static electricity
Which of the following is an acquired trait? *
4 points
Blood type
Sun tan
Facial features
Eye color

Which of the following is an example of instinct? *
4 points
riding a bike
hair color
a bear in hibernation
eye color

Which of the following is a non-seed producing plant? *
4 points
trees
spruce
grape vine
fern
Which of the following is an amphibian? *
4 points
lizard
salamander
snake
stingray