Energy Flashcards
What is the control variable?
The one you keep the same
What is the independent variable?
The one you change
What is the dependant variable?
The one you measure
What is the independent variable in investigating specific heat capacity?
Changing the material
What is the dependent variable in investigating specific heat capacity?
Measuring specific heat capacity
What is the control variable in measuring specific heat capacity?
Initial temperature, insulating layer, time taken all kept the same
What is the units of mass in gravitational field strength?
Kg
What happens when an object falls?
It loses gravitational potential energy and gains kinetic energy.
What will stretching an object do?
Give it elastic potential energy
What does heating a material do?
Transfers the energy to its thermal energy store - temperature increases.
Explain what happens to a kettle when it is heated.
Energy is transferred to the thermal energy store of the
kettle. Energy is then transferred by heating to the water’s thermal energy
store. The temperature of the water will then increase.
What is specific heat capacity?
The amount of energy needed to raise the temperature of 1kg of a material by 1 celcius.
What are the eight energy stores?
Kinetic, thermal, chemical, elastic potential, gravitational potential, electrostatic, magnetic and nuclear.
What do all moving objects have?
Kinetic energy
What do all objects also have? (Aside kinetic energy)
Thermal energy