به انگلیسی

Magnet Poles: Push or Pull?

علوم · نیروها و حرکت · سن ۷ تا ۹ سال

نام ______________________ تاریخ ____________

Every magnet has both a north pole and a south pole.
دور یکی دایره کشیدن: درست نادرست
Two south poles facing each other will pull together.
دور یکی دایره کشیدن: درست نادرست
True or false: A magnet can have a north pole without a south pole.
دور یکی دایره کشیدن: درست نادرست
What happens when you try to push two north poles together?
- They attract
- They repel
- They stick together
- Nothing happens
A magnet's pull is strongest at its poles.
دور یکی دایره کشیدن: درست نادرست
Sam holds two magnets with N facing N, and they push apart. He turns one magnet around so S now faces N. What happens now?
- They attract and pull together
- They keep pushing apart
- Nothing changes
Ben's magnet makes a steel paperclip slide across the table before they even touch. What does that show?
- A magnet's pull works without touching
- The paperclip moved all by itself
- The table pushed the paperclip
Two south poles face each other. What happens?
- They repel and push apart
- They attract and pull together
- Nothing happens at all
If two magnets snap together on their own, the poles facing each other must be different, one north and one south.
دور یکی دایره کشیدن: درست نادرست
Two magnets must touch each other before they can pull together.
دور یکی دایره کشیدن: درست نادرست

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درست · One magnet always has two poles: a north pole at one end and a south pole at the other.
نادرست · Two south poles are like poles, and like poles repel, so they push apart instead.
نادرست · Every magnet has both a north and a south pole. You cannot have just one pole by itself.
They repel · Like poles repel. Two north poles push away from each other.
درست · The lesson says a magnet's pull is strongest right at its poles, the two ends.
They attract and pull together · Flipping the magnet changed the poles facing each other from same to opposite, so now they attract.
A magnet's pull works without touching · The clip started moving across a gap, so the magnet's pull worked before any touching.
They repel and push apart · Two south poles are the same, so like poles repel and push apart.
درست · Only opposite poles attract, so snapping together means the facing poles were different.
نادرست · The pull starts while there is still a gap, which is why magnets snap together on their own.