55
II.
There are several definitions in the text. What are they? Complete the
sentences with appropriate words (in some sentences you need more than 1
word).
1)
… - a specific area of study in the field of science that focuses on the
makeup and properties of both energy and matter, as well as how the
two interact together.
2)
… … - both forms of energy that travel in the form of waves.
3)
… … - are only capable of hearing frequencies of about 20 kilohertz.
4)
... determines if it is detectable by the human eye, although humans
are capable of seeing different types of wave lengths than other
species.
III.
Are these sentences true or false?
1)
When the frequency of the sound waves changes, it creates a change
of pitch in the sound that is not heard by the human ear.
2)
Each type of light has different wave length frequencies.
3)
Humans are among the greatest hearing species in the world.
4)
Both light and sound are forms of energy that move in waves.
5)
The level of sound wave frequencies that can be perceived is
dependent upon the capability of the species body
.
Достарыңызбен бөлісу: 
