Examlex
Rilles on the Moon are due to volcanism, not impacts.
Absolute Thresholds
The minimum intensity of a stimulus that one can perceive at least 50% of the time.
Colour Hue
The quality of a color determined by its dominant wavelength, making it distinguishable as red, green, blue, etc.
Light Wave
An electromagnetic wave visible to the human eye, responsible for the perception of light and color.
Wavelength
The distance between successive crests of a wave, often used to describe the properties of light and sound waves.
Q12: All the planets orbit the Sun in
Q23: Mars and Mercury are similar in size,and
Q24: Relate the formation of the Himalayas to
Q34: The only spacecraft to go into orbit
Q40: Saturn's bands,oval storm systems,and turbulent flow patterns
Q52: While most large moons orbit counterclockwise above
Q60: The tendency of a wave to bend
Q67: The energy required to ionize a hydrogen
Q80: Relate the formation of Mercury's scarps to
Q98: One of the effects of Mercury's very