The following topic has been broken down into 6 components. Click on the part you wish to learn about in more detail below.
| Wave Classification | Limitations of Sound |
| Electromagnetic Waves | Application of Waves |
| Visible Waves | Energy Transfer alternatives |
Topic Revision
- a) Define a wave.
b) There are two types of waves. Name them and give an example of each.
c) Copy the diagram below:
d) What is the frequency of a wave? What units is it measured in?
e) Fill in the table below:
| Wave type/Human experience | Amplitude | Frequency |
| Sound wave | ||
| Light wave |
f) What are 3 differences between light & sound waves?
2. a) Describe the electromagnetic spectrum.
b) List the different types of radiation found in this spectrum from the lowest energy to highest energy.
c) For 3 of the waves above, give at least 2 uses for each.
d) What are some of the effects (positive and negative) of using electromagnetic spectrum? (Think about communications and health)
3. a) Reflection is:
b) The law of reflection states:
c) Draw a diagram showing a light ray reflecting off a smooth surface.
d) Give 2 examples of reflection occurring.
4. a) Refraction is:
b) Draw a diagram showing a light ray refracting as it passes from air into glass.
c) Give 2 examples of refraction occurring.
5. a) Scattering of light is:
b) Draw a diagram of a ray of white light being scattered by a prism. (dispersion)
c) Give 2 examples of light scattering.
d) What colours make up the visible portion of the electromagnetic spectrum (what colours make up white light)?
6. a) Absorption of light is:
b) Draw a diagram of a ray of white light hitting a transparent red sheet. Describe what happens.
c) Give an example of absorption.
7. Draw a diagram of a: convex lens & concave lens
- a) Define transparent and give an example of a transparent object.
b) Define opaque and give an example of an opaque object.
c) Why do black objects appear black?
d) Sound is produced by _________________ and must have a ___________________ to travel through.
9. What is the relationship between the speed, frequency and wavelength of a wave? (write formula and symbols that represent each part)
10. Remember the electromagnetic spectrum and be prepared to label any part of it. For example: the types of radiation in their correct order, which end has the longer wavelength and which the shorter wavelength, which end has the highest frequency and which end has the lowest frequency, which end has the highest amount of energy and which has the lowest amount of energy.
Sample Answers for Revision
Obviously, have a go at the questions first with your class notes, textbook or an internet search… No prizes won by skipping revision.
Mr Danic 