Energy Science Review

Mechanical energy is the --- 

• total of all the potential energy in an object
• total of all the kinetic energy in an object
• total of an object's potential energy and kinetic energy
• total of an object's stored energy and potential energy 

When you clap your hands together really hard, what to kinds of energy do you observe?

• heat and sound
• light and sound
• heat and mechanical
• mechanical and sound

Heat energy always flows from ___

• hot objects to hotter objects
• cooler objects to warmer objects
• warmer objects to hotter objects 
• warmer objects to cooler objects 

Which action produces the most friction and heat?

• gently brushing face paint onto your cheeks
• rubbing your bare hands together numerous times
• rubbing your soapy hands under water
• smoothing hand lotion onto the palms of your hands

You can see through glass and water because __

• light bounces off them
• light goes through them
• air goes through them
• light is absorbed by them

Which object produces light energy and heat energy but NOT sound energy?

• computer
• desk lamp
• iPad
• radio

Blake looks at the fist from above the water, and the look large. When Blake looks at them from under the water, they look smaller. What happens to the light as it travels from the water to the air?

• it stops
• it bends
• it reflects
• it is absorbed

• Where was the light source?
• What is the temperature of the table?
• What was the temperature of the paper?
• What type of table the paper was placed on?

What must happen for an object to produce sound?

• The object must glow.
• The object must vibrate.
• The object must be warmed.
• The object must be cooled. 

As you slide down a slide, which statement is true?

• You lose kinetic energy.
• You gain potential energy.
• Potential energy is changed into kinetic energy.
• Mechanical energy is stored.