Question

Why would it be hard to pour a liquid in a cup kept in space?
A. The density of liquid increases in space and it can not flow like a liquid
B. The liquid will freeze in space
C. The liquid won't fall down as there is no gravity in space
D. It will stick to the container and hence can not be poured

Answer 1

The space has no gravity. The matter sticks to earth due to the presence of gravitational force between them. On earth, things fall down and can be poured only because of the presence of gravitational force. In space, there is a Vacuum and no gravitational force.

Complete answer:
As there is no gravitational force acting on the liquid in space so the liquid does not fall down. There is no downward movement. The liquid remains inside the cup. The density has nothing to do with this phenomenon, also no density change is observed when the object is kept in space.

No sticking of liquid occurs as sticking will be based on the strength of the cohesive and adhesive force between the container and the liquid. So concluding we can say that due to the absence of gravitational force, the liquid cannot be poured into a cup kept in space.

Hence, the correct option is C.

Note: Gravitational force is defined as the force of attraction between two masses which is directly proportional to the product of both the masses and inversely proportional to the square of the distance between them.