CGS3 - Revision - U5

True or False: Forces can make objects start moving, stop moving, or change direction.

• True

• False

True or False: Gravity (Trọng lực) is a force that pushes objects away from Earth.

• True

• False

True or False: Friction (Lực ma sát) slows things down when they rub against each other.

• True

• False

True or False: All metals are magnetic (có từ tính).

• True

• False

True or False: Opposite poles (hai đầu trái ngược) of a magnet attract each other.

• True

• False

Choose the correct answer:
What is a force?

• A type of material

• A push or pull

• A kind of energy

Choose the correct answer:
What force makes things fall to the ground? (e.g. dropping things)

• Magnetism

• Friction

• Gravity

Choose the correct answer:
Which of these is a non-magnetic (không có từ tính) object?

• Steel nail

• Plastic spoon

• Iron paperclip

Choose the correct answer:
What happens when you put two south poles of a magnet together?

• They attract (hút nhau)

• They repel (đẩy nhau)

• Nothing happens

Choose the correct answer:
What happens when you put ends poles of a magnet together?

NORTH and NORTH

• They attract (hút nhau)

• They repel (đẩy nhau)

• Nothing happens