Alchemy to Chemistry
Light
Sound
Action
Global Systems
Trivia
100
Name the three main types of radiation.
Alpha, Beta and Gamma
100
Name the colours of the rainbow: ROYGBIV
Red Blue
Orange Indigo
Yellow Violet
Green
100
Name three parts of the ear.
Pinna, eardrum, ear canal, cochlea, hair cells, ossicles (anvil, stirrup, hammer)
100
What is current measured in? Give the name and units.
Amperes, amps (A)
100
Name two greenhouse gases.
Any two of:
Nitrous oxide
Carbon dioxide
Methane
100
Who won the 2025 Melbourne Cup?
Half Yours
200
Which device is used to measure radiation levels?
A geiger counter
200
What is the speed of sound in air:
a. 340 m/s
b. 1500 m/s
c. 4500 m/s
340 m/s
200
What is the purpose of ear wax?
To trap dust and insects.
200
State Ohm's Law.
V = IR where V = voltage
I = current
R = resistance
200
Plants take in carbon dioxide, water and light energy during which process?
Photosynthesis
200
Who is the Australian Prime Minister?
Anthony Albanese
300
Who took this x-ray of his wife's hand?
Wilhelm Roentgen
300
A concave lens curves ________________.
Inwards
300
What range of sounds can humans hear?
20-20000Hz
300
Should an ammeter be connected in series or parallel?
Series
300
Why does the Earth need the nitrogen cycle?
Most nitrogen is in the air and is not in a form that can be used by plants or animals. The cycle uses bacteria and lightning to convert it into usable forms.
300
Which was the first soft-drink to be sent into space?
Coca-Cola
400
If carbon-14 has a half-life of 5700 years, after how many years will a 1kg sample decay (or break down) to 500g?
5700 divided by 2 = 2850 years
400
Finish labelling the diagram of light reflection. The dotted line is called the _______ and the red line is the ___________ray.
Red line - incident ray
Dotted line - the normal
400
Draw a transverse wave on the board. Label a crest and trough, the wavelength and the amplitude.
400
Why are the electrical circuits in houses constructed in parallel?
So if one appliance or light is faulty, the rest keep on working.
400
Name the 5 layers of the atmosphere.
Troposphere
Stratosphere
Mesosphere
Thermosphere
Exosphere (exit to outer space)
400
In which year was the Punt Hotel built?
1925
500
During nuclear fission, alpha particles are emitted (given off). Draw one type of alpha particle on the board, giving its chemical symbol, number of protons and mass number.
500
What is the function of the retina in your eye?
To capture light and convert it into electrical signals to send to the brain.
500
Why is there no sound in outer space?
Because there is no air (space is a vacuum), sound waves need a medium to travel through. Sound waves cannot travel because they have no medium through which to propagate.
500
What is the purpose of an earth wire, and which appliances have one?
The earth wire conducts any leaking current into the ground to stop people from getting electrocuted. Appliances with metal casing (e.g. fridges and microwaves) have a three-pin plug like this, as their metal conducts electricity.
500
The paraglider, Eva, rose to what height during the thunderstorm?
9947m
500
Which team is joining the NRL in 2027?
Perth Bears