Gravity — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The amount of matter that an object contains is called its mass.
Grade 5 science defines mass as the amount of matter in an object.
2. The pull of gravity on an object is measured as its weight.
Grade 5 students learn weight is the gravity force acting on mass.
3. If you travel to the Moon, your mass stays the same as on Earth.
Grade 5 science teaches that mass does not depend on location.
4. On the Moon, your weight is much less than your weight on Earth.
Grade 5 learners know weaker Moon gravity gives a smaller weight.
5. Mass is measured in grams or kilograms.
Grade 5 science uses kilograms as the standard unit of mass.
6. Weight is measured in units of force called newtons.
Grade 5 students record weight in newtons, the unit of force.
7. The Moon's gravity is about one sixth as strong as Earth's gravity.
Grade 5 science notes Moon gravity is about 1/6 of Earth's.
8. Two students with different masses still feel the same force of gravity per kilogram of their mass.
Grade 5 learners see gravity pulls equally per kilogram on every object.
9. Even a tiny pebble has mass, so gravity still pulls on the pebble.
Grade 5 students understand gravity acts on all objects with mass.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Mass
→ Is the amount of matter in an object
Stays the same in both places
Weight
→ Is the pull of gravity on an object
Is much less on the Moon
Mass on the Moon vs Earth
→ Stays the same in both places
Is the amount of matter in an object
Weight on the Moon vs Earth
→ Is much less on the Moon
Is the pull of gravity on an object
Grade 5 students match each idea to its definition or to how it behaves on the Moon.