Review Midterm Unit 3 - Force and Energy

Complete the following passage using the list of words.

You may use the words once, more than once, or not at all.

Increase decrease weight mass

As the mass of a planet _______________ the strength of gravity on the planet ___________.

• Increase, increase

• decrease, increase

• weight, mass

• mass, weight

The strength of gravity on a planet is 5 N/kg.

Calculate the weight of an 800 kg spacecraft on that planet and give the correct unit.

• 8000 N

• 4000 N

• 8000 Kg

• 4000 Kg

A bag of sugar is lifted onto a high table.

State two energy stores in the sugar.

• Chemical and Kinetic

• Chemical and Gravitational Potential

• Elastic and Chemical

• Thermal and Kinetic

Which of these terms describes the energy that is dissipated?

• Energy that spreads out and becomes less useful

• Energy that becomes more useful

• Energy that can be used later

• Energy that is not useful but can be stored

Write the word used to describe:

The force of gravity on an object.

• Weight

• Mass

• Force

• Gravity

Write the word used to describe.

The quantity of matter in an object.

• Weight

• Mass

• Force

• Energy

Which of these can be dissipated? Choose all that are correct.

• chemical

• thermal

• light

• sound

• elastic

Which two measurements have the same units?

• weight and mass

• mass and energy

• energy and force

• weight and force

The diagram shows the Earth and Moon.

Which letter or letters where there will be high tide on Earth in this diagram?

• A

• A and B

• B and D

• A and C

There is also low tide at a place in the diagram.

How many hours until the next low tide in the same place?

• 6 hours

• 12 hours

• 24 hours

• 3 hours