Efficiency
What is more efficient - an iphone 13 with 25% efficiency or an iphone 12 with 50% efficiency
Iphone 12
What type of energy is found when a skydiver is ABOUT to jump from a plane (hint: don't count the movement of the plane)
Gravitational potential energy
Electricity of a blender turning into sound energy
Transformation
What flag has blue, white and red vertical stripes in that order?
French
WA, SA, QLD
What is the energy efficiency of a apple watch if the chemical energy is 50J, the light is 40J and the heat is 10J
80%
Lemonade
Chemical
Holding a cold can of coke and the metal and then the coke heating up
Transfer
What is the capital of Germany?
To the nearest 100,000, what is the estimated population of the NT
300,000 (259-264k)
75%
Energy that is most often wasted
thermal
What is the law of energy conservation
Energy can never be created nor destroyed, it can only be transferred or transformed
Who is the current leader of the Commonwealth?
King Charles
How many Tiwi islands are there?
11
Two dogs eat the same amount. Dog A is running at 20km/hr and Dog B is running at 22km/hr - which is more efficient?
Dog B
Another word for stored energy
Potential
Draw a sankey diagram of:
A blender having 90J of input energy, 45 joules of kinetic, 15 joules of sound and 30 j of heat
Teacher judgement
What non-primate animal has fingerprints that are most similar to humans?
Koalas
To the nearest 10%, what percentage of Uluru is underground?
90%
Airpods are 15% efficient - they have an input of 100J. What is their useful energy amount?
15J
Draw an energy flow diagram for a torch
chemical --> torch--> light +heat
A diver has 100J of GPE at the top of the board - why doesn't he reach the water with 100J of kinetic energy?
Energy is wasted as heat, sound and kinetic of particles around him
Rank these from worth the most to worth the least:
Australian dollar, US dollar, Great British Pound
USD
AUD
How many territories does Australia have?
10 (3 internal and 7 external)