How Lenses Bend Light — Questions and answers

Read the full story

What makes light from distant galaxies bend as it travels to Earth?

Choices

  1. The mass of the stars ✓
  2. The busy streets of San Francisco
  3. The glow of a streetlamp
  4. A hidden world

Answer: The mass of the stars

From page 1

What are lenses usually made of, according to Rio's dad?

Choices

  1. Glass or plastic ✓
  2. Metal or wood
  3. Air or water
  4. Fabric or paper

Answer: Glass or plastic

From page 2

What are the two main types of lenses Marisol explained?

Choices

  1. Convex and concave ✓
  2. Thick and thin
  3. Big and small
  4. Glass and plastic

Answer: Convex and concave

From page 3

What do concave lenses do to light rays?

Choices

  1. They spread them out ✓
  2. They bring them to a single point
  3. They make them disappear
  4. They change their color

Answer: They spread them out

From page 5

What is the bending of light called?

Choices

  1. Refraction ✓
  2. Reflection
  3. Diffraction
  4. Absorption

Answer: Refraction

From page 6

How do cameras use lenses?

Choices

  1. To focus light onto film or a digital sensor ✓
  2. To make sounds for videos
  3. To heat the camera
  4. To change the camera's color

Answer: To focus light onto film or a digital sensor

From page 7