Mechanical Energy
Mechanical energy includes both ______ energy and ______ energy.
What are kinetic and potential energy?
Electrical energy must flow through a ______ path to work.
What is a complete path (closed circuit)?
Light travels best through materials that are ______.
What are transparent?
Heat moves from a ______ object to a ______ object.
What is warmer to cooler?
Sound energy is caused by ______.
What are vibrations?
A ball rolling across the floor slows down. What happens to its kinetic energy?
What is it decreases? (Bonus point if you can tell me what force causes this)
What happens to a light bulb if a wire in the circuit is broken?
What is the bulb goes off?
Why does a shadow form behind an object when light shines on it?
What is because the object blocks the light?
If two objects touch, which one loses thermal energy?
What is the warmer object?
Sound energy moves through vibrations in ______.
What is matter?
An object at the top of a hill has mechanical energy because it has ______ energy.
What is potential energy?
Why is copper commonly used for wires?
What is because copper is a conductor?
How is refraction different from reflection?
What is refraction bends light; reflection bounces light?
Which type of heat transfer causes boiling water to move in circles?
What is convection?
What determines pitch and what determines volume?
What is pitch = speed of vibrations, volume = strength of vibrations?
At which point on a swing does potential energy become kinetic energy?
What is as it starts MOVING downward?
Which circuit part provides electrical energy?
What is the energy source (battery or outlet)?
Why do dark-colored objects feel warmer in sunlight than light-colored objects?
What is because they absorb more light energy?
Why can you feel heat from a campfire even when you are not touching it?
What is because of radiation?
What change would make a guitar string produce a higher-pitched sound?
What is faster vibrations (tighter or shorter string)?
Explain how energy changes as a roller coaster moves from the top of a hill to the bottom.
What is potential energy changes into kinetic energy?
Describe two different forms of energy that electrical energy can change into in a fan.
What are mechanical (motion) and sound, or Heat (thermal) energy?
Materials that let almost all light pass through are called ______.
What are transparent materials?
Explain how conduction and convection work together when heating soup on a stove.
What is conduction heats the pot; convection moves heat through the soup?
Why does sound travel faster in water than in air?
What is because particles are closer together?