Physical quantities and measurement

Buoyancy is the tendency for objects to float in a fluid. We consider buoyancy the...

• Un-gravity force

• The upward force

• Gravitational pull

• Downwards pull on an object

If you place an object in a fluid and it sinks which is true

• its weight is less than the buoyant force

• the fluid is more dense than the object

• its weight is greater than the buoyant force

• none of the above

Which liquid is the least dense?

• oil

• water

• syrup

• plastic bottle

Why does this huge ship float on the water and not sink?

• Its average density is less than the density of water

• Its average density is greater than the density of water

• Its average density is equal to the density of water

• It does not have any density

I have a block with volume 200cm³ and mass 400g. What is its relative density

• 2000

• 2g/cm³

• 2kg/m³

• 2

What is the volume of Object X?

• 10.0 cm³

• 15.0 cm³

• 25.0 cm³

• 20.0 cm³

What is the density of water? ( Tick all correct answers)

• 1 kg/m³

• 1000 kg/m³

• 1000 g/cm³

• 1 g/cm³

Volume is ...

• Mass/Volume

• The amount of matter in an object.

• The amount of space an object occupies.

• Anything that has mass and occupies space

An object with which of the following densities will float on water?

• 0.7 g/cm³

• 1.2 g/cm³

• 3.5 g/cm³

• 11.4 g/cm³

Why do ice cubes float in a glass of water?

• the ice cubes are more dense than the water

• the water is more dense than the ice cubes

• the water is more dense than the glass

• the ice is more dense than the glass