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20 questions
Select examples of potential energy
nuclear
kinetic
heat
chemical
light
select examples of action energy
heat
elastic
sound
kinetic
gravitational
Select the appropriate energy transformation for:
skateboarding down a slope
chemical energy > kinetic energy + sound energy + heat energy
gravitational potential energy > kinetic energy + sound energy + heat energy
chemical energy > heat energy + light energy + sound energy
elastic potential energy > kinetic energy + sound energy
chemical energy > kinetic energy + sound energy + heat energy
Select the appropriate energy transformation for:
Riding a bike
chemical energy > kinetic energy + sound energy + heat energy
gravitational potential energy > kinetic energy + sound energy + heat energy
chemical energy > heat energy + light energy + sound energy
elastic potential energy > kinetic energy + sound energy
Select the appropriate energy transformation for:
A wind up toy travelling across the floor
chemical energy > kinetic energy + sound energy + heat energy
gravitational potential energy > kinetic energy + sound energy + heat energy
chemical energy > heat energy + light energy + sound energy
elastic potential energy > kinetic energy + sound energy
Select the appropriate energy transformation for:
Swimming in the pool
chemical energy > kinetic energy + sound energy + heat energy
gravitational potential energy > kinetic energy + sound energy + heat energy
chemical energy > heat energy + light energy + sound energy
elastic potential energy > kinetic energy + sound energy
Select the appropriate energy transformation for:
Burning wood in a fire
chemical energy > kinetic energy + sound energy + heat energy
gravitational potential energy > kinetic energy + sound energy + heat energy
chemical energy > heat energy + light energy + sound energy
elastic potential energy > kinetic energy + sound energy
Select the CORRECT statements
If energy is wasted, then it is lost altogether
If energy is lost from one object then it will be gained by another
The total amount of energy in the universe is always changing
Energy cannot be created or destroyed
The energy in food is stored as...
chemical potential energy
kinetic (action) energy
sound (action) energy
nuclear (potential) energy
Sources of nuclear energy include
the sun
nuclear power
a stove
high powered vehicles
In Australia, the energy in food is measured in
calories
kilojoules
watts
newtons
Select the food which has the LEAST amount of energy per serve
Mars bar - 1020kJ per serve
Big Mac - 2060kJ per serve
Weetbix - 492kJ per serve
Banana - 365kJ per serve
Select the food which has the MOST amount of energy per serve
Mars bar - 1020kJ per serve
Big Mac - 2060kJ per serve
Weetbix - 492kJ per serve
Banana - 365kJ per serve
An hypothesis...
is what you measure in an experiment
is the purpose for doing an experiment
is an educated guess about the experiment results
is something you keep the same
is something you change in the experiment
A dependent variable is...
is what you measure in an experiment
is the purpose for doing an experiment
is an educated guess about the experiment results
is something you keep the same
is something you change in the experiment
An independent variable is...
is what you measure in an experiment
is the purpose for doing an experiment
is an educated guess about the experiment results
is something you keep the same
is something you change in the experiment
A controlled variable is...
is what you measure in an experiment
is the purpose for doing an experiment
is an educated guess about the experiment results
is something you keep the same
is something you change in the experiment
An aim is...
is what you measure in an experiment
is the purpose for doing an experiment
is an educated guess about the experiment results
is something you keep the same
is something you change in the experiment
A teacher is doing an experiment. She gives one of her year 8 science classes homework, and the other class no homework. She wants to find out whether homework improves grades.
An appropriate hypothesis would be...
Homework will probably improve students' grades
If students do homework then they will get better grades.
Students should not have to do homework
If year 8 students do homework they will get a stamp.
Students burn food in an experiment (see image). They can do some calculations using the change in water temperature to find out how much energy is in the food.
An appropriate aim would be...
To find out how much kinetic energy is in a potato chip
If the food is unhealthy then it will have more potential energy
To find out how much chemical potential energy is stored in different foods
To find out how much energy is in food
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