A calculation based on the chemical energy of gasoline shows that a car should be able to go 100 miles on a gallon of fuel. When the car was driven on a test track, the car only went 25 miles on a gallon of fuel. What accounts for most of the difference?
A: the waste heat from the combustion of fuel in the engine

The sound, light, and heat that a firecracker produces are originally stored as which type of energy?
A: chemical energy

All these statements concerning galaxies are accurate except
A: Most can be seen without a telescope.

Temperatures below freezing are expected overnight. What might be done to protect plants growing outside?
A:
cover them