PHYSICS YEAR 7 2ND TERM

What happens when the amplitude of a sound wave increases?

• The loudness does not change.

• The loudness decreases.

• The loudness increases.

• The loudness increases and decreases.

What happens when you ‘twang’ a ruler and move one end over the edge of a table and back?

• The sound goes higher as the vibrating length increases

• The sound goes lower as the vibrating length increases

• The sound goes higher as the vibrating length decreases

• The sound goes lower as the vibrating length remain unchanged.

What happens to the frequency of a sound when its pitch decreases?

• The frequency increases

• The frequency increases and then decreases

• The frequency decreases

• The frequency do not change

When sulphur is burnt in oxygen what is formed?

• a mixture

• a compound

• an element

• None of the above

Which of these metals are not magnetic?

• Gold

• Iron

• Steel

• Nickel

The loudness of a sound is measured in __________

• wavelengths

• Pitches

• Units

• Decibels

A musical note increases in loudness when ______________

• the energy used in producing it increases

• the energy used in producing it decreases

• the energy used in producing it is random

• No energy is used to produce it.

Sound travels the furthest in __________

• Solid

• liquid

• Gas

• Vacuum

Sound DO NOT travel in ___________

• Solid

• Liquid

• Gas

• Vacuum

In which state of matter do sound waves travel the slowest?

• Solid

• liquid

• Gas

• Vacuum