Mid-Term Studying

A solar-powered car converts __________ energy into ____________ energy

• light/radiant, chemical
• light/radiant, mechanical
• mechanical, light/radiant
• chemical, mechanical

Which is an example of electrical energy being converted into light energy? 

• the sun
• a light bulb in a lamp
• a tree
• a glow stick at Halloween 

On a cold, winter day, Sheena rubs her hands together.  Stored chemical energy is transformed into mechanical energy.  Due to the Law of Conservation of Energy, some of the mechanical energy is also transformed into

• thermal (heat) energy
• light energy
• solar energy
• kinetic energy 

Will was riding his bike when a dog ran out in front of him. He slammed on his brakes. During this quick stop, some of the mechanical energy was changed into 

• heat energy
• light energy
• kinetic energy
• potential energy

Water that flows from behind a large dam can cause machines to generate electricity.  What change takes place?

• Heat energy changes into mechanical energy
• Sound energy changes into electrical energy
• Chemical energy converted into electrical energy
• Mechanical energy is converted into electrical energy

Consider the energy transformations that occur when lighting a match. Which of the following statements is true?

• Most of the energy is lost when the match is struck.
• New energy in the form of light and heat is created when the match is struck.
• The chemical energy is transformed into heat and light energy.
• Some of the chemical energy is transformed into heat and light and the rest is destroyed. 

Which energy transformation is correct for an electric fan that is on?

• Heat ---> mechanical ---> electrical 
  
• Electrical ---> chemical and sound ---> heat
• Mechanical ---> heat ---> sound
• Electrical ---> mechanical ---> heat and sound

Which statement below correctly explains the energy transformations in a gas-powered car engine?

• electrical ---> chemical ---> light
• chemical ---> mechanical ---> nuclear       
• chemical ---> heat/thermal ---> mechanical 
• electrical ---> sound ---> thermal  

Which statement below correctly explains the energy transformations in a battery-powered flashlight? 

• electrical ---> chemical ---> light
• chemical ---> electrical ---> light and thermal
• chemical ---> heat/thermal ---> mechanical
• electrical ---> mechanical ---> thermal

Whenever one form of energy is converted into another, some of the original energy is always converted into which type of energy?

• light
• kinetic
• heat/thermal
• sound