Thermal
Heat Energy
What is the SOURCE of electricity in a circuit?
Which materials PREVENT or STOP electricity from moving?
INSULATORS
Which object gives off heat?
A. Blanket
B. Flashlight
C. Fork
D. Hammer
B. Flashlight
On a camping trip, the instructor used the campfire to heat water in a pot.
The water in the pot started to boil after a few minutes. What was the source of heat that made the water boil?
A. blowing
B. burning
C. electricity
D. rubbing
B. burning
When particles are moving, they create...
Heat / Thermal Energy
Which object in a circuit CONDUCTS or MOVES the electricity?
The wire
Which materials ALLOW electricity to move?
CONDUCTORS
Arnie puts a piece of bread into a toaster. What kind of energy created the heat that toasted his bread?
A. Solar
B. Chemical
C. Mechanical
D. Electrial
D. Electrical
Derrick left his book under a lamp for half an hour. Later when Derrick started reading, he found that the pages of the book were warm.
What made the pages warm?
A. blowing
B. burning
C. electricity
D. rubbing
C. electricity
When two surfaces rub together, this is called...
Friction!
Which object OPENS AND CLOSES the electrical path?
The switch
Name 3 examples of insulators.
Glass, Rubber, Air, Plastic, Wood, Fabric
Alberto left a gap in his circuit. He wanted to see which objects could be used to fill the gap and complete the circuit. Which object completed the circuit?
A. Metal spoon
B. Pencil eraser
C. Marker
D. Plastic ball
A. Metal spoon
A student lists some insulators of electrical currents.
- Plastic
- Glass
- Rubber
- ?
Which material should also be included in this list?
A. aluminum
B. copper
C. nickel
D. wood
D. Wood
When an object is on fire, this is called...
Burning!
a load or resistance pulls and uses the electricity in a circuit, this is usually a...
Lightbulb, buzzer, or fan
Name 3 examples of CONDUCTORS.
Metals like Gold, Copper, Lead, Silver, Aluminum
or ACIDS, lemon juice, lime juice, or orange juice
Billy made a complete circuit. What should he add to his circuit if he wants to turn the bulb on and off?
A. a motor
B. a switch
C. an extra battery
D. a separate path
B. a switch
A student makes a chart to show devices that convert electrical energy to heat energy ONLY.
Which device should be used in the chart?
A. Fan
B. Toaster
C. Television
D. Radio
B. Toaster
When charged particles are moving and creating heat, this is called...
Electricity!
When connecting a wire to a battery, which is the correct way to do it?
A. Both wires on the top/positive side
B. Both wires on the bottom/negative side
C. One wire on the top/positive and one wire on the bottom/negative.
C. One wire on the top/positive and one wire on the bottom/negative.
YES or NO
Is a circuit a good way to test if materials are insulators or conductors?YES
Your class decides to build a circuit to make a lightbulb shine. When you are finished, you have a battery, wire, and lightbulb.
What role does the battery play in the circuit design?
A. The battery works as the system's wires.
B. The battery is the electrical power supply.
C. The battery is the circuit's main conductor.
D. The battery works as the system's electrical switch.
B. The battery is the electrical power supply.
A researcher makes an electric circuit by connecting a bulb, battery, and pencil with connecting wires.
After completing the circuit, the researcher observes that the bulb does not glow. Which material should the researcher use to REPLACE the pencil so that the bulb glows?
A. crayon
B. metal key
C. plastic ruler
D. toothpick
B. Metal key