Thermal Energy and Heat Transfer

What You'll Learn

Thermal energy transfers from warmer objects to cooler ones through conduction (direct contact), convection (fluid movement), and radiation (electromagnetic waves).

Key Words

density
mass

Materials Needed

plastic bottles
balloons
measuring cups
paper towels

Safety First

Adult supervision recommended.
Do not taste any materials.

Steps

Step 1 — Read

Read the introduction and identify the main idea of this lesson.

Step 2 — Do

Separate a mixture of sand, salt, and iron filings using a magnet, water, and a filter. Record each step and what you separated.

Step 3 — Observe

Look for patterns in your observations.

Step 4 — Record

Make a graph or chart showing your results.

Check Your Understanding

Question 1

1 of 3

Which has a pH below 7?