Q.1.
Sound waves travel fastest through which material?
Q.2.
What are light particles known as?
Q.3.
Lowering the temperature of a substance causes its particles to do what?
Q.4.
Which of the following is true of the particles of a liquid?
Q.5.
Particles in which state of matter are tightly packed?
Q.6.
Which state of matter has particles which move very fast?
Q.7.
What takes place when particles gain enough energy to escape the surface of a liquid?
Q.8.
Increasing the temperature causes particles to gain what?
Q.9.
A vibrating object causes air particles to vibrate. These air particles cause other air particles to vibrate, which cause more air particles to vibrate.  What is this movement of energy called?
Q.10.
Sound waves can cause which of these to vibrate?