Light and Sound
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Light sources and darkness
SubtopicLight sources and darkness under Light and Sound for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
Which of these is a light source that uses electricity to glow?
A.A light bulb
B.A piece of paper
C.A rock
D.A wooden bowl
- 2.
What happens if we block all the light from entering a room?
A.The room gets warmer
B.The room gets darker
C.The room gets brighter
D.The room gets louder
- 3.
Which of these is a natural source of light often seen in the woods at night?
A.A flashlight
B.A glow-worm
C.A street light
D.A car headlight
Download the worksheet for Light and Sound - Light sources and darkness to practice offline. It includes additional chapter-level practice questions.
How shadows are formed and changed
SubtopicHow shadows are formed and changed under Light and Sound for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
Why is the shadow of a person tall in the early morning?
A.Because the Sun is low in the sky
B.Because people are taller in the morning
C.Because the ground is flat
D.Because the air is colder
- 2.
Which of these best describes what a shadow is?
A.A reflection of an object
B.An area where light cannot reach because an object is in the way
C.A dark painting on the ground
D.A twin that only comes out in the sun
- 3.
If a shadow is being cast on the floor by a ceiling light, and you move the object higher (closer to the light), what happens to the shadow?
A.It gets smaller
B.It gets bigger
C.It disappears
D.It stays the same
Download the worksheet for Light and Sound - How shadows are formed and changed to practice offline. It includes additional chapter-level practice questions.
Reflective materials
SubtopicReflective materials under Light and Sound for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
Which of these surfaces is best for a disco ball to reflect light around a room?
A.Tiny flat mirrors
B.Small pieces of sponge
C.Little squares of cloth
D.Bumpy pieces of clay
- 2.
If you place a mirror in front of a clock, the reflection will look:
A.Exactly the same
B.Backwards (reversed)
C.Upside down
D.Completely black
- 3.
Which of these describes a 'dull' surface?
A.A surface that reflects light very well
B.A surface that does not reflect light well
C.A surface that produces its own light
D.A surface that you can see through
Download the worksheet for Light and Sound - Reflective materials to practice offline. It includes additional chapter-level practice questions.
Production of sound through vibrations
SubtopicProduction of sound through vibrations under Light and Sound for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
Which of the following is true about all sounds?
A.They are all pleasant to hear
B.They are all caused by vibrations
C.They all come from animals
D.They all travel at the same speed as light
- 2.
Why does a slammed door make a loud noise?
A.The door and frame vibrate strongly
B.The door turns into a gas
C.The door gets colder
D.The door changes shape forever
- 3.
When a cat purrs, you can feel its chest moving. This movement is called:
A.Vibration
B.Evaporation
C.Condensation
D.Reflection
Download the worksheet for Light and Sound - Production of sound through vibrations to practice offline. It includes additional chapter-level practice questions.
Changing pitch and volume
SubtopicChanging pitch and volume under Light and Sound for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
What is the main difference between a scream and a whisper?
A.The pitch only
B.The volume only
C.The color of the sound
D.The direction of the sound
- 2.
If you want to create a high pitch using a rubber band, you should make it...
A.Thick and loose
B.Thin and tight
C.Thick and tight
D.Thin and loose
- 3.
Which of these would produce a sound with the lowest volume?
A.Dropping a feather on a pillow
B.Dropping a book on a wooden floor
C.Dropping a spoon in a sink
D.Dropping a coin on a sidewalk
Download the worksheet for Light and Sound - Changing pitch and volume to practice offline. It includes additional chapter-level practice questions.