Show:
I like to move it, move it
That's like, so basic
Ch-Ch-Ch-Changes
Let it go, let it go
Potluck
100
What is the energy of movement?
Kinetic energy
100
What are the 5 most common forms of energy?
Kinetic, heat, light, sound and electrical
100
Name the two ways in which energy can be used
Transformed or Transferred
100
What does the Law of conservation of energy state?
Energy cannot be created or destroyed
100
Name 2 kinds of renewable energy
Solar, wind, hydro...
200
How many Joules of energy are contained in 2kJ?
2000J
200
What is another name for "stored" energy
Potential energy
200
What type of energy goes into starting a car and what type or types of energy are released?
Chemical in the form of fuel starts the car and kinetic, sound and heat energy are produced.
200
What is the name of the diagram that uses arrows to indicate (show) energy used and energy wasted?
Sankey Diagram
200
Explain what it means for an appliance to be energy efficient.
The majority of the energy that goes into the appliance is used to do the task the appliance is meant for and only a small amount of the energy is wasted (answers may vary)
300
Read the sentence below. What ONE word fills both blanks. _____ is the name given to the effects of using energy. Whenever and object is shifted or forced to change shape, then ____ has been done.
work
300
"Energy is stored in a stretched or squashed spring" is an example of what type of energy?
Elastic Potential Energy
300
What type of energy is eating a piece of toast?
Chemical
300
True or False: A plane in the air has more energy than a plane taking off.
True
300
True or False: The total amount of energy in the universe is always changing.
False: see - law of conservation of energy
400
You can't see or weigh me, but you can observe what I do. I am needed to move or heat something, to make noise, or to change an objects shape. What am I?
Energy
400
What is the unit used to measure energy?
Joules
400
What does an energy flow diagram show us?
It shows the energy transformations or transfers between objects
400
What type of energy does a basketball have when it is bounced and reaches its highest point before it starts to fall?
Gravitational Potential Energy
400
When you use a torch, what is the initial energy input, useful energy output and wasted energy output?
Chemical energy from batteries -> Light energy-useful/heat energy-wasted
500
Explain why sound energy could be considered a type of kinetic energy.
Because, sound results from the MOVEMENT of air particles
500
What process do plants use to create energy? AND what types of energy are in this process
Photosynthesis. Solar energy is converted/transformed into chemical energy/
500
Energy Efficiency=useful energy output/energy input X 100 A battery operated car uses 1800J of Chemical energy. The energy is converted into: 450J kinetic 300J sound 1050J heat Given that the useful energy is kinetic, calculate the % efficiency of the car.
450/1800 X 100 =25%
500
A toaster is plugged in and used to toast a piece of bread. On the board, draw an energy flow diagram that shows energy input and energy output. Label which is useful and which is wasted.
Electrical in -> heat, light out. heat useful, light wasted.
500
What does a calorimeter do?
It measures the amount of energy is released from materials (in relation to food, it measures how much energy is produced when food burns in order to calculate the energy contained in that food in the form of Joules)