Waves, Light, and Sound

Grade 4 Science Worksheet

Circle the answer.

1. 1.

   How do you see a red apple on a table in a lit room?

   • light bounces off the apple into your eyes
   • your eyes send light out to the apple
   • the apple makes its own light
   • light goes from your eyes to the lamp
2. 2.

   A tsunami wave is only about 1 meter tall at sea but very long. Near shore it grows very tall. What happens to its energy?

   • it disappears in the deep ocean
   • it turns into light near the shore
   • it crowds into a taller wave near shore
   • it moves into the sea floor forever
3. 3.

   What is the lowest point of a wave called?

   • the trough
   • the crest
   • the amplitude
   • the peak
4. 4.

   Sam throws a pebble into a pond. Rings of waves spread out. What do the waves carry?

   • energy
   • the pebble
   • sand from the bottom
   • all the pond water
5. 5.

   A sound gets quieter as you walk away from a speaker. What is happening to the waves that reach you?

   • they are turning into light
   • they have more energy
   • their wavelength disappears
   • they have less energy and smaller amplitude