Grade 3 science quiz on melting and freezing with answers

🧊 Quick Study Guide

• 🌡️ Melting is when a solid turns into a liquid because it gets warmer. Think of an ice cube turning into water!
• 🔥 Freezing is when a liquid turns into a solid because it gets colder. Think of water turning into ice!
• 💧 The freezing point of water is 0 degrees Celsius (0°C) or 32 degrees Fahrenheit (32°F).
• ☀️ Heat causes melting. Taking away heat (cooling) causes freezing.
• 🍫 Different substances melt and freeze at different temperatures. For example, chocolate melts at a lower temperature than iron.

🧪 Practice Quiz

1. Which of these is an example of melting?
   1. Ice cream getting hard in the freezer.
   2. Water turning into ice.
   3. A popsicle getting soft on a hot day.
   4. Fog forming in the morning.
2. What happens to water when it freezes?
   1. It turns into steam.
   2. It turns into ice.
   3. It disappears.
   4. It boils.
3. At what temperature does water freeze (in Celsius)?
   1. 100°C
   2. 50°C
   3. 0°C
   4. 25°C
4. Which of these makes ice melt faster?
   1. Putting it in the freezer.
   2. Adding salt to it.
   3. Wrapping it in a cold towel.
   4. Placing it in the shade.
5. Which of the following is an example of freezing?
   1. A snowman shrinking.
   2. Rain turning into snow.
   3. A puddle disappearing.
   4. Butter melting on toast.
6. What is needed for freezing to happen?
   1. Adding heat.
   2. Taking away heat.
   3. Adding light.
   4. Adding sound.
7. What is the opposite of freezing?
   1. Boiling
   2. Evaporation
   3. Melting
   4. Condensation