Grade 3 Sheet 4 builds multi-step reasoning about electricity and magnetism. Grade 3 students work through four multiple-choice questions on why magnets grip steel doors, how compasses align with Earth, why electric eels zap prey, and how junkyard cranes release cars on command. Five fill-in-the-blank items reinforce iron content, Earth's magnetic field, and the role of electric current. This Grade 3 sheet pushes learners to connect material makeup, magnetic forces, and practical machines into full scientific explanations.
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Electricity and Magnetism
Part A: Multiple Choice
Circle the best answer for each question.
1. Grade 3: Why does a refrigerator magnet stick firmly to the fridge door but not to a wooden cabinet door?
A) The fridge door is made of steel, which contains magnetic iron
B) The wooden door is slippery and greasy on purpose
C) Magnets only work when the room is warm and sunny
D) All doors repel magnets except shiny ones
2. Grade 3: Why does a compass needle always point toward the north when you let it settle?
A) Earth itself acts like a giant magnet with a north and south pole
B) The sun pulls on every compass during the day
C) Compasses contain tiny hidden batteries
D) Gravity pushes the needle sideways toward north
3. Grade 3: Electric eels can make strong electric shocks. Why does this ability help them survive?
A) They can stun prey and defend against predators
B) They use the shocks to change the color of rocks
C) Shocks make their scales grow faster each day
D) Electricity helps them read books under the water
4. Grade 3: Why can an electromagnet in a junkyard crane drop a steel car exactly where the worker wants?
A) The current can be switched off to turn the magnet off
B) The car becomes lighter after being lifted up high
C) Steel melts when it is close to an electromagnet
D) Gravity reverses whenever the magnet is on
Part B: Fill in the Blank
Write the correct answer on each line.
1. Steel is attracted to magnets because it contains a lot of iron.
2. Earth behaves like a giant magnet with its own north and south poles.
3. An electric eel can give off shocks strong enough to stun fish.
4. An electromagnet only works while electric current flows through its wire.
5. A compass needle points north because it lines up with Earth's magnetic field.
Electricity and Magnetism
★ Part A: Multiple Choice
Circle the best answer for each question.
1. Grade 3: Why does a refrigerator magnet stick firmly to the fridge door but not to a wooden cabinet door?
A) The fridge door is made of steel, which contains magnetic iron
B) The wooden door is slippery and greasy on purpose
C) Magnets only work when the room is warm and sunny
D) All doors repel magnets except shiny ones
2. Grade 3: Why does a compass needle always point toward the north when you let it settle?
A) Earth itself acts like a giant magnet with a north and south pole
B) The sun pulls on every compass during the day
C) Compasses contain tiny hidden batteries
D) Gravity pushes the needle sideways toward north
3. Grade 3: Electric eels can make strong electric shocks. Why does this ability help them survive?
A) They can stun prey and defend against predators
B) They use the shocks to change the color of rocks
C) Shocks make their scales grow faster each day
D) Electricity helps them read books under the water
4. Grade 3: Why can an electromagnet in a junkyard crane drop a steel car exactly where the worker wants?
A) The current can be switched off to turn the magnet off
B) The car becomes lighter after being lifted up high
C) Steel melts when it is close to an electromagnet
D) Gravity reverses whenever the magnet is on
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) Steel is attracted to magnets because it contains a lot of iron.
2) Earth behaves like a giant magnet with its own north and south poles.
3) An electric eel can give off shocks strong enough to stun fish.
4) An electromagnet only works while electric current flows through its wire.
5) A compass needle points north because it lines up with Earth's magnetic field.
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