How Light Travels

What You'll Learn

Light travels in straight lines and can be reflected, refracted, or absorbed. Mirrors reflect light, lenses refract (bend) light, and dark surfaces absorb light.

Key Words

observation
experiment
conclusion

Materials Needed

pennies
plastic wrap
cardboard
tape
scissors
straws

Safety First

Use materials only as directed in the experiment.
Keep small objects away from young children.
Work in a well-ventilated area when using vinegar or other strong-smelling substances.

Steps

Step 1 — Read

Read and learn: Light travels in straight lines and can be reflected, refracted, or absorbed. Mirrors reflect light, lenses refract (bend) light, and dark surfaces absorb light.

Step 2 — Do

Measure and record your data in a table.

Step 3 — Observe

Compare the before and after states.

Step 4 — Record

Write your conclusion: did the results match your hypothesis?

Check Your Understanding

Question 1

1 of 3

What is sound?