Energy

What is used to gain speed in ski jumping?

• Kinetic energy

• Nuclear energy

• Potential energy

• Thermal energy

What gives an object gravitational potential energy?

• Chemical attraction

• Electric attraction

• Gravitational attraction

• Magnetic attraction

What converts the potential energy of water into electricity in hydropower plants?

• Turbines

• Heat pumps

• Solar panels

• Generators

What is the purpose of pumped-storage hydroelectric plants?

• Regulating energy released to the grid

• Producing wind energy

• Producing oil (ON)

• Producing solar energy

• Height

• Mass

• Gravitational acceleration

What does kinetic energy depend on?

• Only mass

• Only velocity

• Mass and velocity

• Position

Which unit expresses kinetic energy?

• Newton

• Joule

• Watt

• Volt

What is kinetic energy?

• Chemical energy

• Energy related to motion

• Thermal energy

• Renewable energy

Which formula represents kinetic energy?

Why does a train have more kinetic energy than a car at the same speed? What's the cause?

• mass

• speed

• size

• colour