48 questions in Light and sound
Most triedMost missedNewest- Sound travels as…
- Light travels…
- A ray of light hits a plane mirror at an angle of incidence of 30°. What is the angle of reflection?
- The diagram below shows how a certain optical instrument works.
- A list of materials is given below: water, copper wire, oxygen gas.
- Answer the following about reflection. The first diagram shows a light ray reflected on a plane mirror X.
- Answer the following about sound. The diagram shows a builder hitting a wall with a hammer. Two children, X and Y, are standing the same distance fro…
- The first diagram shows a ray of yellow light as it approaches and enters a glass prism. The yellow light ray is then replaced by a white light ray, …
- The diagram below shows two light rays from a bulb at point O, at the base of a pool, entering an observer's eye above the water.
- The diagram below shows a parallel beam of light incident on a lens.
- Answer the following about sound. Thapelo uses the set-up below to produce sound. He pushes the metal plate down at point X and then releases it. Whe…
- Which of these gives off its own light?
- Which of these makes a loud sound?
- What do we call the dark shape made when something blocks light?
- How is sound made?
- Which material lets light pass through clearly?
- When is your shadow shortest on a sunny day?
- Why can we see objects that do not give off light?
- What happens to light when it hits a mirror?
- Light travels in ___ lines.
- Through which does sound travel fastest?
- Why can't sound travel in space?
- What is an echo?
- Which instrument makes sound by vibrating strings?
- Why does a stick look bent when it is put partly in water?
- What do we see when white light passes through a prism?
- How many colours are usually named in the rainbow?
- What does the 'pitch' of a sound mean?
- A short, tight guitar string makes a ___ sound.
- What makes a sound louder?
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