Forces

Which show the correct relationship for density, mass and volume?

• Density = mass ÷ volume

• Density = volume ÷ mass

• Density = mass x volume

• Density = volume x mass

Which the correct equation for working out the mass of an object?

• mass = density + volume

• mass = density ÷ volume

• mass = volume ÷ density

• mass = density x volume

Which is the correct definition for volume?

• The area of a shape measured in cm²

• The amount of space something takes up, measured in cm³

• How heavy something is.

• The amount if space taken up measured in cm.

True or false, 1ml is the same as 1cm³

• True

• False

The density of an object depends on...

• ....the shape of the object

• ...how many atoms are squeezed into the space (the concentration of the atoms), the more atoms, the more dense.

• ....how strong the material is

• ....the size of the object

If an object has a mass of 200g and a volume of 50cm³ what is it's density?

• 2g/cm³

• 4cm³

• 4g/cm³

• 4g

When you fly a kite, what force will be acting to help keep it in the air?

• buoyancy

• friction

• gravity

• air resistance

When you fly a kite what force will pull it back down to the ground?!

• gravity

• drag

• air resistance

• buoyancy

in this situation what is the resultant force?

• 0N (balanced)

• 125N to the left

• 75N to the right

• 50N to the left

Which is these objects is designed to increase pressure?

• spatula

• soup spoon

• sharp knife