Q.1.
Which word describes the 'highness' or 'lowness' of a sound?
Q.2.
Which force is caused by the pull of gravity on an object?
Q.3.
What do we call a push or a pull upon an object which is caused by another object?
Q.4.
Which force is exerted by a surface when it rubs against another surface?
Q.5.
What do we call a material which allows heat or electricity to pass through it?
Q.6.
Which of these words means to spin on an axis?
Q.7.
What do we call something which produces its own light?
Q.8.
What do we call friction that is caused by air or water?
Q.9.
Which force pulls everything towards the centre of the Earth?
Q.10.
Which word means to bounce off a surface, without being absorbed?