ENERGY TRANSFORMATION
Your friend Abby is coming over. When she gets to your house, she rings the doorbell. The ringing doorbell is an example of light energy.
TRUE OR FALSE?
False
The electrician puts on rubber gloves before touching any wires.
Is the electrician using the gloves as a conductor or an insulator?
Insulator
Mom used an iron to get the wrinkles out of Tommy's shirt.
The iron has __________. (complete the sentence)
a. thermal energy
b. mechanical energy
c. light energy
A
If there is an ________ in the circuit, electricity will not flow.
Opening
Luis is playing baseball. He is up to bat. Luis hits the ball with his bat and scores a homerun. How is energy transferred from the bat to the ball?
a. by heat
b. by sound
c. through contract between objects
C
Raven learned about static electricity in science class. When she got home, she wanted to show her parents how to create static electricity.
Which of the following could Raven do to show static electricity? Select all that apply.
a) Getting shocked when touching a doorknob.
b) Riding her bicycle and using the handlebars to steer.
c) Rubbing a balloon on her head to have her hair stick up.
d) Shuffling across a carpet and then getting shocked when touching a light switch.
a, c, and d
Marcia plugs in her electric stovetop. She cooks macaroni and cheese for dinner.
How is the energy transformed?
a. light 🡪 electrical
b. mechanical 🡪 thermal
c. electrical 🡪 thermal
C
Flora is using a blow dryer to dry her hair after she gets out of the shower.
What type of energy transformation occurs in the hair dryer?
Electrical Energy to Thermal Energy
Felicia plugs in her lava lamp.
How is the energy transformed?
electrical 🡪 thermal
George created an electromagnet in science lab. He wants to increase the strength of his electromagnet.
Which of the following can he do to strengthen his electromagnet? Select all that apply.
increase the number of coils
add plastic to the core
increase the current
decrease the number of coils
a. increase the number of coils and c. increase the current