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Mass vs Weight Measurement

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Mass vs Weight Measurement

Balance scale and objects for measuring mass

📚 Part 1: Understanding Mass and Weight

1. What is the difference between mass and weight?

Mass and weight are the same thing

Mass is the amount of matter; weight is the force due to gravity

Mass is measured in Newtons; weight is measured in kilograms

Mass changes on different planets; weight stays the same

2. Which units are used to measure mass?

Grams (g)

Kilograms (kg)

Newtons (N)

Milligrams (mg)

3. What instrument would you use to measure mass?

Spring scale

Balance scale

Ruler

Thermometer

4. If an object has a mass of 500g on Earth, what would its mass be on the Moon?

500g

250g

1000g

0g

🔢 Part 2: Metric Conversions

5. Convert the following measurements:

a) 2500g = _______ kg

b) 3.5kg = _______ g

c) 750g = _______ kg

d) 0.25kg = _______ g

6. Choose the most appropriate unit (g or kg) for measuring these objects:

a) A bag of sugar: _______

b) A paperclip: _______

c) Your school bag: _______

d) A grape: _______

e) A car: _______

📏 Part 3: Estimation and Measurement

7. Estimate the mass of these classroom objects, then measure them using scales:

Object 1: Textbook

Estimated mass: _______ g Actual mass: _______ g

Object 2: Water bottle (full)

Estimated mass: _______ g Actual mass: _______ g

Object 3: Apple

Estimated mass: _______ g Actual mass: _______ g

8. Explain in your own words why mass stays the same everywhere in the universe, but weight can change:
9. A student says "I weigh 50 kilograms." Explain what is wrong with this statement and how it should be corrected:

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