I have a science question that's bugging me. It was on the year 6 SATS paper today....?

Question

If a ball of clay was attached to the base of a straw and lowered into a measuring cylinder filled with a salt water solution, the force pulling DOWN on the ball is GRAVITY. What is the upward force called?

Answer 1

boyancy

Answer 2

"Buoyancy" is the correct answer.

Answer 3

it's called capillary action & it's what drives water up the branches of trees & blood into your head.

http://en.wikipedia.org/wiki/Capillary_a...

Answer 4

upwards thrust

Answer 5

Upthrust