5.1 Vocab

Parallax

• A type of optical illusion

• A shift in the position of an object when viewed from different locations.

• A method of measuring distances in astronomy

• A phenomenon related to color perception

Doppler Effect

• Change in amplitude of a wave as the source moves towards or away from the observer.

• Shift in frequency of a wave as the source moves towards or away from the observer.

• Increase in speed of a wave as the source moves towards the observer.

• Decrease in wavelength of a wave as the source moves away from the observer.

Frequency

• Amount of waves passing through a point every second.

• The speed of a wave in a vacuum.

• The distance between two consecutive peaks of a wave.

• The total energy carried by a wave.

Continuous Spectrum

• Complete range of colors or frequencies of light with no gaps or lines.

• A spectrum that shows distinct lines of color separated by gaps.

• A type of spectrum that only includes primary colors.

• A spectrum that is limited to ultraviolet and infrared light.

Electromagnetic Spectrum

• The range of all types of light.

• A type of sound wave.

• A measure of temperature variations.

• A collection of radio frequencies.

Emission Spectrum

• Pattern of bright lines or bands of light produced by a substance when it gives off light.

• A continuous range of colors emitted by a solid object.

• The absorption of light by a substance at specific wavelengths.

• A phenomenon where light is scattered in all directions.

Absorption Spectrum

• Pattern of dark lines or bands seen when light passes through a substance.

• A continuous range of colors emitted by a hot object.

• The spectrum of light reflected by a surface.

• A series of bright lines on a dark background.

Wavelength

• Distance between one point to a corresponding point on a wave.

• The height of a wave from its rest position.

• The speed of a wave in a vacuum.

• The frequency of a wave multiplied by its amplitude.