Grade 3 Sheet 3 is a gentle introduction to open and closed circuits. Learners first spot-correct sentences about switches and cut wires, then complete fill-in-the-blank statements about circuits, switches, and power sources. They finish with three true or false items that check whether current flows in complete loops. Every question ties back to the core Grade 3 idea that electricity only moves when the path is unbroken.
Style:
Electricity and Magnetism
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
when the switch is open the bulb lights up.
Rewrite: When the switch is open, the bulb does not light up.
2. Fix the sentence:
a cut wire still carry electricity to the bulb.
Rewrite: A cut wire does not carry electricity to the bulb.
3. Fix the sentence:
closed circuits has a complete path for current.
Rewrite: A closed circuit has a complete path for current.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A complete loop that lets current flow is called a closed circuit.
2. When a wire is cut, the circuit becomes open and the bulb turns off.
3. A switch is a part that opens or closes a circuit when you flip it.
4. A battery is a power source that pushes current through the circuit.
Part C: True or False?
Read each statement. Circle True or False.
1. Grade 3 fact: a closed circuit has no breaks and lets current flow.
True False
2. Grade 3 fact: when the switch is open, the bulb still lights up.
True False
3. Grade 3 fact: cutting a wire in a circuit stops the current from flowing.
True False
Electricity and Magnetism
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
when the switch is open the bulb lights up.
Rewrite: When the switch is open, the bulb does not light up.
2) Fix the sentence:
a cut wire still carry electricity to the bulb.
Rewrite: A cut wire does not carry electricity to the bulb.
3) Fix the sentence:
closed circuits has a complete path for current.
Rewrite: A closed circuit has a complete path for current.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) A complete loop that lets current flow is called a closed circuit.
2) When a wire is cut, the circuit becomes open and the bulb turns off.
3) A switch is a part that opens or closes a circuit when you flip it.
4) A battery is a power source that pushes current through the circuit.
★ Part C: True or False?
Read each statement. Circle True or False.
1) Grade 3 fact: a closed circuit has no breaks and lets current flow.
True
False
2) Grade 3 fact: when the switch is open, the bulb still lights up.
True
False
3) Grade 3 fact: cutting a wire in a circuit stops the current from flowing.
True
False
Ready to Practice?
Complete each section carefully.
10 Questions
15-20 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.