Navigate through this page following all the links and directions. Answer any questions you come across in red and do any activities as directed.

Sound

Watch the following video about sound.

 

Watch this video to see how sound waves travel through the ear and turn mechanical energy into electrical energy for the brain.

 

Go to Hearing- A Black Box Problem- How do I hear? for more practice and complete the sequencing activity.

Question: What is sound and how does it get to the brain?

Pitch/ Frequency/ Loudness

Review wavelength, amplitude and frequency at 5-14 Curriculum. Notice that when you change the frequency you change the wavelength.

Now explore pitch at Do You Hear What I Hear? and at 5-14 Science change the pitch and volume to explore more. Notice at both sites if wavelength, amplitude or frequency changes with pitch and loudness.

Learn more about sound by playing Ocean Odyssey at Engineering Interact.

Question: What is changing with the loudness? What changes with pitch?

Go to the Science lab and explore Pitch and Volume.

Question: What is pitch?

Tuning forks are used to set the pitch on musical instruments. Go to the table and complete the tuning fork activities.

Answer the questions for each activity.

Light

What is Light?

Question: What is light?

Remember that light waves are electromagnetic waves that travel without a medium. They are made by particles of energy called photons. Watch the following video to learn more about light.

 

Go to Engineering Interact and play Alien Attack to learn more about light.

Watch the following video and learn more about how light travels and the law of reflection.

 

Learn about the Law of Reflection at The Physics Classroom Lesson One: Reflection and its Importance. Complete the four questions at the end.

Light and the Human Eye

Get the sheet Human Eye Sheet. Diagram the parts of the eye and illustrate how light enters the eye and creates an image.

Color Light VS Color Pigments

Go to Color Mixing to learn more about how we see and the three primary colors of light.

Question: How the primary colors of light(additive colors) different that the primary pigments(subtractive colors) of paint?

Question: What part of the eye allows us to see color? What part of the eye allows us to see light and dark? Why does an apple appear red?

Mirrors

Learn why an image is formed in a plane mirror at The Physics classroom. Be sure to watch all animations.

Explore how plane mirrors reflect light at How we see.

Question: How is an image in a plane mirror different from the real object? If you are standing in 2 feet in front of a plane mirror how far will the image in the mirror be from you? If a toddler crawls towards a mirror at a rate of 0.25 m/s, then at what speed will the toddler and the toddler's image approach each other?