Energy Stores & Systems

Question 1

Name the 8 types of energy store

Answer 1

1. Thermal
2. kinetic
3. Gravitational potential
4. Elastic potential
5. Chemical
6. Magnetic
7. Electrostatic
8. Nuclear

Question 2

4 ways energy is transferred

Answer 2

1. Mechanically
2. Electronically
3. Heating
4. Radiation

Question 3

• What is a system. Give examples
• How is energy transferred. Give examples
• ## what is a closed system

Answer 3

• Single object - eg air in piston, group of objects eg 2 colliding cars
• When system changes eg can be transferred into or away from system,between different objects or between different types of energy store
• System where neither energy or energy can enter or leave

Question 4

• Describe boiling water (as the system)in a kettle
• As above ,with heating element & water as 2 object system

Answer 4

• Energy >Water (from heating element) by heating into water’s thermal energy store causes temperature of water to rise
• Energy transferred electronically to thermal energy store if heating element, which transfers energy by heating to water’s thermal energy store

Question 5

• What happens to energy when object speeds up or slows down