Unit 6 6º

Engines provide thrust to move a plane forward

• true

• false

What creates lift?

• The engine

• Gravity

• The shape of wings

• Drag

Which force needs to be less than thrust for the plane to continue moving?

• Gravity

• Drag

• Lift

• None of these options

Look at the photo, which material has the higher density?

• The gold coloured

• The silver coloured

Look at the picture, what do we use scales to measure?

• mass

• volume

Look at the picture, which force is greater?

• Buoyancy pulling up

• Weight pulling down

• Buoyancy and weight are equal

• Lift pulling up

Density is the mass of an object divided by its volume

• True

• False

There are 1.000 grams in one kilogram

• True

• False

The shape of an object affects whether it floats

• True

• False

Which two things use rolling friction to move?

• Trains

• Snowboards

• Slides (toboganes)

• Roller skates