What type of energy is greatest at the top of the roller coaster?
Potential Energy
What force slows the parachutist down?
Air Resistance
Why doesn't the person sink deeply into the snow?
The large area reduces pressure.
Why is a sharp knife easier to use?
A smaller area creates greater pressure.
Why does the straw look bent?
Refraction
What simple machine helps lift the load?
Pulley
Why is wearing a seatbelt important?
It stops your bodies inertia from continuing forward during a crash.
What energy is increasing as the cyclist goes downhill?
Kinetic Energy
Why is the astronaut floating?
Continuous free fall around Earth.
Why use a ramp instead of lifting directly?
Less force is needed.
Why does the shadow form?
The object blocks light.
Why are tractor tires so wide?
To reduce pressure on the ground.
Why do we see lightning before hearing thunder?
Light travels faster than sound
Why doesn't the bird get electrocuted?
It does not complete an electrical circuit.
