Students identify what energy a toaster converts electricity into, which safety device prevents electrical fires, and how adding a third bulb to a parallel circuit affects brightness. Part B has five fill-in-the-blank problems about light bulb energy conversion, voltage as the push driving current, and the unit of resistance.
Energy conversion and circuit design questions challenge fourth graders to connect electrical concepts to real devices and physical principles.
Style:
Electricity and Circuits
Part A: Multiple Choice
Circle the best answer for each question.
1. A toaster converts electrical energy mainly into which form of energy?
A) sound energy
B) light energy
C) heat energy
D) chemical energy
2. Which safety device in a home is designed to prevent electrical fires?
A) light switch
B) extension cord
C) circuit breaker
D) power strip
3. Two identical bulbs are connected in series to one battery. A third identical bulb is connected in parallel to the same battery by itself. Which bulb is brightest?
A) One of the series bulbs
B) They are all equally bright
C) The parallel bulb
D) None will light up
4. What happens to the overall resistance when you add more bulbs in series?
A) Resistance decreases
B) Resistance stays the same
C) Resistance increases
D) Resistance disappears
Part B: Fill in the Blank
Write the correct answer on each line.
1. A light bulb converts electrical energy into light and heat energy.
2. The push that moves electrons through a circuit is called voltage.
3. Resistance is measured in units called ohms.
4. A generator converts mechanical energy into electrical energy.
5. Power lines carry electricity at very high voltage over long distances.
Electricity and Circuits
★ Part A: Multiple Choice
Circle the best answer for each question.
1. A toaster converts electrical energy mainly into which form of energy?
A) sound energy
B) light energy
C) heat energy
D) chemical energy
2. Which safety device in a home is designed to prevent electrical fires?
A) light switch
B) extension cord
C) circuit breaker
D) power strip
3. Two identical bulbs are connected in series to one battery. A third identical bulb is connected in parallel to the same battery by itself. Which bulb is brightest?
A) One of the series bulbs
B) They are all equally bright
C) The parallel bulb
D) None will light up
4. What happens to the overall resistance when you add more bulbs in series?
A) Resistance decreases
B) Resistance stays the same
C) Resistance increases
D) Resistance disappears
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) A light bulb converts electrical energy into light and heat energy.
2) The push that moves electrons through a circuit is called voltage.
3) Resistance is measured in units called ohms.
4) A generator converts mechanical energy into electrical energy.
5) Power lines carry electricity at very high voltage over long distances.
Ready to Practice?
Complete each section carefully.
9 Questions
12-18 minutes
Auto-graded
Retry anytime
🏆
Questions Correct
0
Correct
0
Incorrect
0
Skipped
0:00
Time
0%
Score
Review Your Answers
See what you got right, missed, or skipped.