Science Test 1

• A name of an energy that contains heat is thermal
• the name of a energy that categorizes the sun and bulbs is Light
• One example of sound energy is sound waves
• Electrical energy contains electrical adams
• Chemical energy is stored between atoms
• Mechanical energy is energy of motion
• Energy can be defined as the ability to do work
• Work is defined as The ability to exert a force using displacement (movement)
• W = Force x displacement (movement)
• Jouls = 1 Newton moved 1 meter
• Kinetic energy 1 is Kinetic
• Kinetic energy 2 is Thermal
• Kinetic energy 3 is Electrical (moving )
• Kinetic energy 4 is wave
• Subunder wave 1 is sound waves
• Subunder wave 2 is light
• Subunder wave 3 is water
• Subunder wave 4 is electromagnetic
• potential energy 1 is Gravitational
• potential energy 2 is nuclear (Radioactive )
• potential energy 3 is chemical
• potential energy 4 is Elastic
• Potential energy 5 is electrical (Static)
• calculate the efficiency of a computer Input= 100J Heat= 10J Sound = 3J Light = 20J This efficiency equals 23J
• Potential energy is the energy stored in an object
• Kinetic energy is the energy created by physical movement
• Independent varibale is deliberately changed by me
• A dependent variable is the the variable that changes as a result of the independent variable movement
• Controlled variable must remain the same to make the experiment valid /fair. You must have at least 4 of them in every experiment.
• Calculate the PE = mxgxh ( the Gravatational PE is always 9.8ms)
• On a graph the dependent variable always goes on Y axis and interdependent variable goes on the x axis
• Line graph = numbers (DOTS )
• Column Graph = words (columns up )
• Temperature measures the average kinetic energy of the particles in a substance or atmosphere in c or f
• Thermal energy within a material that is responsible for its temperature measured in J
• Heat Thermal energy in transit from a hotter system to a coller system.
• The amount of thermal energy in a object depends on temperature , Mass and type of material
• Heat transfers in 4 ways one is conduction the process in which heat moves from one object to another without direct touch.
• heat transfers in 4 ways one is convection the process of transferring heat through liquid or air currents. (Hot air rises cold air down)
• heat transfers in 4 ways one is radiation the process by which objects give off heat as electromagnetic waves. (Sunlight)