physics Flashcards
to revise physics (33 cards)
What are the three primary types of energy resources?
Renewable, non-renewable, and nuclear.
True or False: Solar energy is a renewable energy resource.
True.
Fill in the blank: The particle model of matter states that all matter is made up of _____ that are in constant motion.
particles
What is the main disadvantage of fossil fuels?
They produce greenhouse gases and contribute to climate change.
What is the role of the National Grid?
To distribute electricity from power stations to consumers.
Choose the correct answer: Which of the following is a non-renewable energy resource? A) Solar B) Wind C) Coal D) Geothermal
C) Coal
What does the term ‘energy efficiency’ refer to?
The ratio of useful energy output to the total energy input.
True or False: The particle model can explain the states of matter.
True.
What type of energy resource is hydroelectric power?
Renewable.
Fill in the blank: In the particle model, solids have particles that are _____ packed together.
closely
What is a major advantage of renewable energy resources?
They are sustainable and have a lower environmental impact.
Choose the correct answer: Which is NOT a feature of the National Grid? A) Balancing supply and demand B) Connecting renewable sources C) Storing energy D) Transmission of electricity
C) Storing energy
What is the primary source of nuclear energy?
Nuclear fission.
True or False: The particle model suggests that gases have a definite shape.
False.
Fill in the blank: The National Grid operates at high _____ to reduce energy losses.
voltages
What is the main purpose of using fossil fuels?
To generate electricity and power vehicles.
Choose the correct answer: Which of the following is a characteristic of liquids? A) Definite shape B) Definite volume C) High compressibility D) All of the above
B) Definite volume
What is geothermal energy?
Energy derived from the heat stored beneath the Earth’s surface.
True or False: The particle model of matter applies only to solids.
False.
Fill in the blank: The process of converting sunlight into electricity is called _____ energy.
solar
What is the significance of energy resources in modern society?
They are essential for powering homes, industries, and transportation.
Choose the correct answer: Which energy resource is considered the cleanest? A) Coal B) Natural Gas C) Wind D) Oil
C) Wind
What happens to the particles in a solid when it is heated?
They gain energy and vibrate more vigorously.
True or False: The National Grid can integrate multiple energy sources.
True.
