- a) Draw a sketch of the electromagnetic spectrum.
b) List the names of wavelength from largest to smallest.
c) List the colours of the visible light spectrum from largest to smallest.
- Define each key term: translucent, transparent, opaque, reflection and absorption.
- What are the primary colours in additive colour theory?
- a) Define secondary colours.
b) R + G =
c) R + B =
d) G + B =
e) R + G + B =
- Draw a diagram illustrating reflection. Label the diagram with the following terms: incident ray, reflected ray, angle of incidence, angle of reflection and normal.
- What is a real image?
- What is a virtual image?
- Describe the law of reflection. In your description include the key terms: angle of incidence, normal and angle of reflection.
- Describe the kinds of images that can be formed by plane mirrors.
- Describe what kind of mirror you would use if you needed to view a large, spread-out area in a small mirror.
- Draw a diagram of a concave mirror.
a) Label the principal axis, centre of curvature, focal point and the vertex.
b) List three practical applications of concave mirrors.
- Draw a diagram of a convex mirror.
a) Label the principal axis, centre of curvature, focal point and the vertex
b) List three practical applications of a convex mirror.
- What is refraction? When does it occur?
- Draw a diagram to illustrate refraction. Label the diagram using the key terms: incident ray, refracted ray, reflected ray and normal.
- Through which medium does light pass more quickly, water or air? Explain.
- Draw three examples of a converging lens.
- Draw three examples of a diverging lens.
- Draw a ray diagram to show why your image is reversed in a plane mirror.
- What does the L.O.S.T. stand for?
- Draw a ray diagram for a concave mirror. The focal length is 3 cm and the object is 5 cm from the vertex. Find the image and complete L.O.S.T.
- Complete each ray diagram below to show an image. List the four characteristic of the image (LOST).