Basic length and mass quiz for Grade 4 science (with answers)

📚 Quick Study Guide

• 📏 Length: How long something is. We measure it in units like meters (m), centimeters (cm), inches (in), and feet (ft).
• ⚖️ Mass: How much matter is in an object. We measure it in units like kilograms (kg) and grams (g).
• 🤝 Relationship: Length and mass are different. A long object isn't necessarily heavy, and a heavy object isn't necessarily long.
• ➕ Converting Units: Remember these common conversions:
  • 📏 1 meter (m) = 100 centimeters (cm)
  • ⚖️ 1 kilogram (kg) = 1000 grams (g)
• 💡 Tips: Always include the unit (cm, m, g, kg) when you write your answer!

🧪 Practice Quiz

1. What unit would you use to measure the length of a pencil?
   1. Grams (g)
   2. Kilograms (kg)
   3. Centimeters (cm)
   4. Liters (L)
2. Which of these is used to measure mass?
   1. Ruler
   2. Scale
   3. Thermometer
   4. Clock
3. Which is heavier: 1 kilogram of feathers or 1 kilogram of stones?
   1. Feathers
   2. Stones
   3. They weigh the same
   4. Cannot be determined
4. How many centimeters are in 2 meters?
   1. 50 cm
   2. 100 cm
   3. 200 cm
   4. 300 cm
5. What unit would you use to measure the mass of a textbook?
   1. Millimeters (mm)
   2. Grams (g)
   3. Kilometers (km)
   4. Centimeters (cm)
6. A string is 300 cm long. How long is it in meters?
   1. 1 m
   2. 2 m
   3. 3 m
   4. 4 m
7. Which of the following is the SMALLEST unit of measurement?
   1. Kilogram
   2. Gram
   3. Meter
   4. Centimeter