Examen Raquel Grijota

why the boats float in the water?

• because under the boat there is an engine

• the net upward force on an object immersed in water is equal to the weight of the water displaced by the object.

• because wood has a lot of resistance and makes it float.

• because sea salt has a consistency that makes all boats float.

If we dropped a feather and a water duck into a bathtub full of water, which would sink first?

•  the feather

• rubber duck

• they don't sink

Who was the person that discovered the upthrust?

What do we use to measure a liquid with hight precision?

• Beakers

• I don't know

• Pipette

• anthropocentrism

Name every instrument to calculate mass and volume.

• Bakers, Balance, Test tube, Pipette, Rain gauge

• Balance, Beakers, Pipas, Rain gauge, Test tube

• Balance, Beakers, Test tube, Pipette, The rain gage

• The rain gauge, Balance, Beakers, Test tube, Pipette

What are the two buoyancy factors?

• Shape and density

• Volume and mass

• Density and matter

If a 0,1kg rubberduck floats in the water, will it happen the same with a 3kg rubberduck?

• Yes, it won't

• Yes, it will float

• I don't care

• No, it won't

In which year was the upthrust discovered?

does the mass and volume of an object influence the amount of upthrust?

• True

• False

does an obect which a large mass and small volume has less upthrust?

• true

• false