Forms of energy
A car speeding along a road is what form of energy?
What is kinetic energy?
Cecilia is combing her hair. She notices that her hair and the comb have developed an electric charge. What will happen when she holds the comb near a small, uncharged object?
What is the uncharged object will stick to the comb?
After light bulbs have been used many hours, their filaments break and the light bulbs stop working. When a light bulb in a room burns out, the other bulbs keep working. Why doesn’t the broken filament stop electric current from flowing to the other lights?
A Light bulbs do not use very much electricity.
B The lights are part of a series circuit so they continue working
C Electrons do not stop flowing when one part of a circuit breaks.
D The light bulbs are in a parallel circuit so they continue to get current.
What is D The light bulbs are in a parallel circuit so they continue to get current?
Plastic a manmade material that is polluting the planet is also used as this.
Some materials conduct electric current and others prevent the flow of electric current. Which of these building materials is an electrical conductor?
A bolt
B brick
C carpet
D window
One type of energy travels as a wave through matter. It causes particles to vibrate in the same direction that the wave travels. Which type of energy is it?
What is sound energy?
Carlita hangs two balloons from a desk. When they hang normally, they are close together but they do not touch. Carlita rubs both balloons with a wool cloth. What happens when she lets the balloons hang near one another?
What is touch and stick together?
When you plug in your lamp and turn it on, the light does not shine. Which of the following is a possible explanation for the light not coming on?
A You plugged the lamp into an open circuit.
B You plugged the lamp into a closed circuit.
C You plugged the lamp into a series circuit.
D You plugged the lamp into a parallel circuit.
What is A You plugged the lamp into an open circuit?
Copper a metal that patinas in water to change from rust color to turquoise is also use for this.
What is a conductor?
Erina is testing common household objects. She is sorting them into good conductors of electricity and good insulators. Which object would be the best conductor of electricity?
A foam cup
B metal knife
C wooden toy
D plastic comb
What is B metal knife?
John is hungry and eats an apple. Most of the energy he obtains from the apple is what type?
Curtis uses a wool cloth to give a balloon a negative charge. What will happen when he holds the balloon near the wall, and why?
What is the balloon will stick to the wall because uncharged objects are attracted to negative objects?
Sara starts to make an electric circuit using a battery, a light bulb, a paper clip, and some wire. She arranges the circuit’s parts as battery---lightbulb---paperclip.Where would be the best place for Sara to put a piece of wire in order to complete the circuit?
A between the top of the battery and the top of the paper clip
B between the top of the battery and the bottom of the light bulb
C between the top of the paper clip and the bottom of the battery
D between the top of the paper clip and the bottom of the light bulb
What is A between the top of the battery and the top of the paper clip?
Which material is BEST used to keep cold drinks from getting too warm too quickly? Why?
a. glass, because it is a good conductor of heat
b. foam, because it is a poor conductor of heat
c. metal, because it radiates heat
d. paper, because it conducts heat
What is b foam, because it is a poor conductor of heat?
Which materials will conduct electricity the BEST?
A. plastic and iron
B. Steel and Iron
C. copper and wood
D. fabric and aluminum
What is B steel and iron?
An object has a type of energy due to the movement of electrons. Which type of energy is it?
What is electrical energy?
Mandy combs her hair with a plastic comb. This causes the comb to become negatively charged. Which of the following would all be attracted to the comb?
Clayton tries to build an electric circuit using a battery, a light bulb, a paper clip, and copper wire. He connects the battery---paperclip---lightbulb in a straight line with the copper wire. Which statement best explains why the circuit would not conduct electricity?
A The circuit lacks a power source.
B The circuit is not a complete loop.
C The light bulb uses the electric current.
D The paper clip stops the electric current.
What is B The circuit is not a complete loop?
Some materials conduct electric current and other materials prevent the flow of electric current. Which object prevents the flow of electric current?
a. salt water
b. rubber eraser
c. steel frying pan
d. copper water pipe
What is b rubber eraser?
There is a book sitting on a high shelf. Which type of energy does the book have because it is on the shelf?
What is potential energy?
Oscar rubbed a balloon against his sweater. This caused the balloon to become negatively charged. Oscar held the balloon above small strips of paper. Some of the strips moved upward and attached to the balloon. Other strips moved away from the balloon. Explains why this occurred.
What is positively charged strips of paper were attracted to the balloon while negatively charged were repelled?
Sidney wants to make an electric circuit. She gathers a lightbulb, wire and metal screw. What additional item does Sidney need to make a complete circuit?
A a battery
B a switch
C an insulator
D a conductor
What is A a battery?
Think about a metal wire wrapped in plastic. Which statement accurately describes the parts of the wire?
a. metal and plastic are both good insulators.
b. metal and plastic are both good conductors.
c. metal is a good conductor while plastic is a good insulator.
d. metal is a good insulator while plastic is a good conductor.
c. metal is a good conductor while plastic is a good insulator.