A magnet can ____________ or _________ other magnets.
A magnet can attract or repel other magnets.
A magnet is a material that has an area around it where the magnetic force is _______
actice
Give 2 reasons why a dolphin can move very fast through the sea.
The dolphin has a streamlined shape; it has a smooth skin.
How do you think the design feature of the lorry's head helps the lorry to travel faster?
Give a lorry a more strealined shape to overcome the air resistance and go faster.
__________ is mixed with steel to make an alloy called stainless steel. (brass/ magnetic/ chromium)
Chromium
________ materials are materials that are attracted to a magnet. (brass/ magnetic/ chromium)
Magnetic
Which force slows down these lories because of their length and size?
Air resistance
The __________ the magnets, the _________ the area and the bigger the distance can be.
stronger/ bigger
__________ is an alloy of copper and zinc. (brass/ magnetic/ chromium)
Brass
How do you think the design feature marked by the arrow helps the lorry to save fuel?
If air resistance is reduced, the lorry does not have to use so much fuel to travel at the same speed.
A mixture of metals is called an __________. (brass/ magnetic/ alloy)
alloy
The __________ the magnets, the _________ the area and the smaller the distance can be.
weaker/ smaller
We can see magnetic area. TRUE or FALSE
FALSE