What does this standard mean a child will know, understand, and be able to do?

6.P.1.1

• All waves transmit energy not matter. Nearly all waves travel through matter. Waves are created when a source (force) creates a vibration.

• Vibrations in materials set up wavelike disturbances that spread away from the source. Wave behavior can be described in terms of how fast the disturbance spreads, and in terms of the distance between successive peaks of the disturbance (the wavelength). Sound and earthquake waves are examples. These and other waves move at different speeds in different materials. Waves are moving energy.

• Light waves are unique in their ability to travel through a vacuum (space). Sound is a form of energy that results when vibrating materials produce waves that move through matter.

• Earthquakes are vibrations in the earth that release the (potential) energy stored in rocks (due to their relative positions and consequent pressure). Earthquakes create seismic waves.

• Compare sound waves (longitudinal waves) to light waves (transverse waves). Energy will cause materials to vibrate. These vibrations are carried as “waves” and transfer energy.

• Identify the basic characteristics of a transverse wave: trough, crest, amplitude, and wavelength. Identify the basic characteristics of a longitudinal (compressional) wave: amplitude, rarefaction, and compression.

6.P.1.2

• Something can be "seen" when light waves emitted or reflected by it enter the eye. Human eyes respond to only a narrow range of wavelengths of electromagnetic waves visible light. Differences of wavelength within that range are perceived as differences of color.

• Light travels in transverse waves. Light is a form of energy emitted by the Sun as well as light producing objects on Earth.

• Light can be absorbed or reflected by objects depending upon the properties of the object and the type and angle of light when it hits the object. Some materials scatter light and others allow light rays to pass through, but refract the light by changing its speed.

• The structure of the human eye can detect many colors in visible light that are reflected by objects. Investigate how the eye works: structures within the eye, functions of these structures in the eye

• Optical illusions. Investigate conditions that impair vision.

6.P.1.3

• Something can be "heard" when sound waves from it enter the ear. Sound is a form of energy that is caused when vibrating materials produce waves that move through matter. These waves have different characteristics such as frequency and amplitude, which will determine the properties of sound such as pitch and loudness.

• The form of the human ear can receive sound waves as vibrations and convert them to signals that are processed by the brain. Investigate how sound travels through different solid materials

• Compare how sound travels through different states of matter

• Investigate how the vocal cords work to produce sound: structure of vocal cords, function of vocal cords and conditions that affect the sound vocal cords make

• Investigate how the ear works: structures within the ear, functions of those structures, conditions that affect hearing