CP3-Energy

Question 1

Name ways of keeping warm in your house

Answer 1

Double glazing
Rod/wall insulation
Aluminium foil

Question 2

Name the energy stores

Answer 2

Chemical
Kenetic
Thermal
Gravitational
Nuclear
Electrostatic
Elastic potential
Magnetic

Question 3

Keeping warm practicle

Answer 3

1. Materials Needed:
   
   • Two identical containers (like small beakers or cups)
   • A thermometer
   • Insulation materials (e.g., cotton wool, bubble wrap, or foam)
   • Hot water
   • Stopwatch or timer
2. Procedure:
   
   • Fill both containers with the same amount of hot water and measure the initial temperature with the thermometer.
   • Cover one container with insulation material and leave the other one uncovered.
   • Start the timer and check the temperature of both containers at regular intervals (e.g., every 5 minutes) for about 30 minutes.
   • Record the temperature readings for both containers.
3. Observation:
   
   • Compare how quickly the temperature drops in the insulated container versus the uninsulated one.
4. Conclusion:
   
   • You should find that the insulated container retains heat better than the uninsulated one, demonstrating the effectiveness of insulation in keeping warm.

This practical helps to illustrate the principles of thermal insulation and heat retention.

Question 4

What are renewable recourses

Answer 4

Renewable resources are natural resources that can be replenished at the same rate they’re used. Examples include solar, wind, hydro, geothermal, and biomass.

Question 5

what are non renewable resources

Answer 5

Non-renewable resources are natural resources that exist in a fixed amount and cannot be easily replaced once used. Examples include fossil fuels like coal, oil, and natural gas, as well as nuclear fuels like uranium.

Question 6

What are energy transfers and name examples

Answer 6

Energy transfers involve the movement of energy from one form or object to another. Common types include:

• Conduction: Heat transfer through direct contact.
• Convection: Heat transfer through the movement of fluids (liquids or gases).
• Radiation: Heat transfer through electromagnetic waves.
• Mechanical: Transfer of energy through physical movement or forces.
• Electrical: Transfer of energy through electric current.