Fill in each blank with the correct word from the lesson.

1. _______ is the invisible force of attraction between all objects that have mass.
2. Isaac Newton realised that gravity is a universal _______ — every object with mass attracts every other object with mass.
3. Gravity is an important topic in _______.
4. We can learn about _______ from this lesson.

Choose the best option for each question.

1. What is gravity?
   a) A pushing force between all objectsb) An attractive force between all massesc) The weight of an objectd) A force only found on Earth
2. How is mass different from weight?
   a) They are the same thingb) Mass is in Newtons, weight is in kilogramsc) Mass stays constant everywhere; weight changes with gravityd) Weight stays constant; mass changes
3. If Earth's gravity is 6 times stronger than the Moon's, how would you feel on the Moon?
   a) 6 times heavierb) Same weight as on Earthc) 6 times lighterd) Weightless

Write T for True or F for False in the brackets.

1. An attractive force between all masses is one of the key concepts in the lesson on Gravity.
2. A pushing force between all objects is the main topic of this lesson.
3. Mass stays constant everywhere; weight changes with gravity is one of the key concepts in the lesson on Gravity.
4. They are the same thing is the main topic of this lesson.

1. In your own words, explain what Gravity means.
2. List two things you learned from this lesson on Gravity.