Energy
State the law of conservation of energy
Energy cannot be created or destroyed; it can only be transferred or transformed
Equation to calculate voltage
V = I × R
Name 3 gases found in Earth’s atmosphere
Nitrogen, Oxygen, Carbon Dioxide
Name 4 types of pollution
Air pollution, water pollution, plastic pollution (others: noise, light, pesticide, soil, chemical, thermal).
What part of a plant transports water from roots to leaves?
Xylem
Equation to calculate energy efficiency as a percentage?
(Useful energy output ÷ Total energy input) × 100%
Name 2 materials that are good conductors of electricity
Copper, aluminium, gold, silver, iron, steel, graphite, ...
Name the traditional Indigenous Australian fish traps used to catch fish.
The Brewarrina Fish Traps (also called Baiame’s Ngunnhu).
Name four non-renewable forms of energy
Coal, oil, gas, and nuclear energy.
What is the word equation for photosynthesis?
Carbon dioxide + water → glucose + oxygen
(using sunlight energy).
Name 3 different types of energy
kinetic, potential, chemical, thermal, electrical, nuclear, mechanical, radiant (light), sound, elastic
What does a switch do in an electric circuit?
It opens or closes the circuit to stop or allow current to flow.
Name 2 Sustainable Development Goals (SDGs).
Examples: No Poverty, Climate Action, Life Below Water, Quality Education, Clean Water and Sanitation.
What is the difference between weather and climate?
Weather refers to short-term atmospheric conditions, while climate refers to long-term average weather patterns over time.
Which planet in our solar system has the most moons?
Saturn
A fan transforms electrical energy into what two forms of energy?
Mechanical energy/kinetic and thermal energy.
If a voltmeter measures volts, what does an ammeter measure?
Current
How is “Caring for Country” connected to sustainability?
“Caring for Country” involves respecting and managing the land in a way that maintains its health for future generations, aligning with sustainability principles.
What are seashells made out of?
Calcium carbonate
What is the largest internal organ in the human body?
Liver
What unit is used to measure energy consumption in appliance star ratings?
Kilowatt-hours (kWh) per year
In a circuit, if voltage is 6V and resistance is 3Ω, what is the current?
I = V ÷ R = 6 ÷ 3 = 2 amperes.
Name 3 greenhouse gases.
Carbon dioxide (CO₂), methane (CH₄), nitrous oxide (N₂O), water vapour.
Name the symbiotic algae that live inside coral
Zooxanthellae
Which part of the eye controls the amount of light entering?
Iris