Weight and Mass
I.
Answer the following questions.
1. What does mass mean?
2. What is the unit of mass?
3. Which scientific equipment do we use to measure the mass of an
object?
4. How does the beam balance work?
5. Explain the difference between mass and weight.
II. Write True or False.
1. Mass is not a force.
2. Weight is a force that can be measured in kilograms.
3. Weight is not affected by gravity.
4. Mass is the amount of matter in an object measured in kilograms and
grams.
5. Jupiter has the smallest force of gravity.
III. The graph shows how much a large rock with a mass of 100 kg
would weigh (in newton) in different places.
1. What is the gravity on Earth and Mars? What can you say?
2. Why would the rock weigh almost nothing in outer space?
3. Which of the places has the strongest force of gravity? How do you know?
IV. Calculate the weight if the following objects on different planets.
Fill in the units on the tables.
Weight= mass
gravity in N/kg (newtons per kilogram)
Planet
Object
mass(kg)
Gravity(N/kg)
Mercury
child
30
3.78
Venus
child
30
9.07
Earth
child
30
10.00
Earth's Moon
baby elephant
130
1.66
Earth's Moon
elephant
5000
1.66
Mars
tiger
300
3.77
Jupiter
cat
20
23.64
Saturn
tiger
300
9.16
Uranus
cat
20
8.89
Neptune
child
30
11.25
What can you say about these values of weight?
Weight (N)