Heat
Heat always flows from ______ to ______.
from hot to cold.
How is sound made?
Objects vibrate and this makes sound.
How does light travel - in a straight line, or a wavy line?
In a straight line.
What are the two kinds of electrical charges?
Positive and negative.
What is Miss Heng's first name?
Julie
How does heat make particles move faster or slower?
Faster
How does sound travel?
By waves
What are two reactions that may take place when light hits an object?
Light can be absorbed or reflected.
What is the formula that related current, voltage and resistance?
V = IR
What Uni does Miss Heng go to?
Adelaide Uni.
Name two sources of heat.
Sun, lightbulbs, our bodies, fires, etc.
Through which material does sound travel the fastest?
Solids
What is created when an object blocks a light source?
A shadow.
What is the flow of charged particles called?
Electric current.
What country was Miss Heng born in?
Australia
What is it called when heat is transferred through empty space from waves?
Convection
What would make you eardrum vibrate faster, a high sound or a low sound?
A high sound.
Why does a pencil's appearance altered when it is placed in water?
Refraction
What three components must be in a circuit?
load, conducting path, power source
What 2 subjects did Miss Heng study in Uni?
Maths and Chemistry
What do you call a material that is good at transferring heat?
A conductor
What two properties can be used to describe sound?
Volume and pitch
If an apple reflects green light and absorbs other colours of light. What colour is the apple?
Green
What material is wrapped around copper wires to stop us from getting zapped?
Plastic coating.
What is Miss Heng's ethnicity?
Chinese Cambodian