Work, power and SHC quiz

When is work done?

• When energy is wasted

• When you think hard

• When energy is transferred from one store to another

• When energy remains in a store

What is the unit for work done?

• Watts

• Joules

• kg

• Celsius

What is mechanical work?

• Work done when a force is applied over a distance

• Work done by a machine

• Work done by a light

• Work done by heating

How much work is done when a 60 N force is applied to move an object 6 m?

• 30 J

• 10 J

• 36 J

• 360 J

What is power? Tick 2 boxes

• Energy transferred per second

• How much energy is transferred

• The rate at which work is done

• work done

What is the unit for power?

• Joules

• Watts

• Celsius

• Amps

What is the power of a light bulb if it transfers 600 J of energy in 10 seconds?

• 60 J

• 60 W

• 6000 J

• 6000 W

If a machine does 2000 J of work in 50 seconds, what is its power output?

• 40 W

• 400 W

• 20 W

• 25 W

Which term means 'the amount of energy needed to raise the temperature of 1 kg of a substance by 1 degree Celsius?

• Power

• Work done

• Energy transferred

• Specific heat capacity

A 1 kg block of each of these materials was left out in the sun for 1 hour. Which would increase in temperature by the greatest amount?

• Copper

• Concrete

• Glass

• Gold