G7 CH3 - Force and Energy

Write the letter or letters where there will be high tide on Earth in this diagram.______________

A container of water is placed over a fire that burns wood. Not all of this energy is transferred to the water. List two other places where this energy could go. [2] _____________ _____________

The strength of gravity on a planet is 5 N/kg. Calculate the weight of an 100 kg spacecraft on that planet. Show your working and give the unit in your answer.

What is the SI unit of mass?

An electric motor works on electrical energy. [2] The motor changes electrical energy in three ways. Write the energy in the correct columns.

There is also low tide at a place in the diagram. State the number of hours until the next low tide in the same place.________________

What form of energy change does this picture shows?

What is dissipated energy?

The quantity of matter in an object. ______________

The force of gravity on an object. ______________

A bag of sugar is lifted onto a high table. State two energy stores in the sugar. __________________________ and __________________________

A container of water is placed over a fire that burns wood. a. Name the energy that is transferred from the fire to the water. ________

What form of energy change does this picture shows?

What is the unit of weight?

Complete the sentence using the most appropriate words. As the mass of a planet ____________________ the strength of gravity on the planet ____________________

Which of these can be dissipated? Choose all that are correct. chemical / thermal / light / sound / elastic