What would be more likely to form a fossil: a worm or a shell? Why?
A shell: it's hard and more durable.
What is solar energy? What can it be used for?
Wow, you really know your stuff! / Sorry, we were looking for...
What are fossils?
Remains of something from the past preserved in the earth.
Name two renewable energy sources.
Solar, wind, hydro, etc.
Why are the sun, wind, and moving water good sources of energy?
They're renewable, readily available, and don't damage the environment.
What's the difference between casts and molds?
Wow, you really know your stuff! / Sorry, we were looking for...
What is alternative energy? Give an example.
Energy other than fossil fuels.
Why should we be careful not to use up fossil fuels?
They're nonrenewable.
Name two fossil fuels.
Oil (petroleum), natural gas, coal, etc.
What are fossil fuels made up of?
Decayed dead organisms.