The Basis for Defining the Length of a Day Is

question 28

Multiple Choice

The basis for defining the length of a day is the fact that

• A)Earth rotates east to west.
• B)Earth does not rotate; rather,it revolves.
• C)Earth rotates on its axis in 24 hours; i.e.,it rotates 15° of longitude per hour.
• D)Earth moves through 365.25 days a year in its orbit about the Sun.

---

Definitions:

Electromagnetic Radiation

A form of energy that is propagated through space or matter, consisting of both electric and magnetic wave components.

Absorption

The process by which substances are taken up internally by other materials or organisms, such as light by molecules or nutrients by cells.

Lower Frequency

Refers to electromagnetic waves or vibrations with a relatively long wavelength and low energy, typically associated with infrared or microwave regions.

Electromagnetic Spectrum

The range of all types of electromagnetic radiation, including visible light, radio waves, X-rays, and gamma rays, characterized by their varying wavelengths and frequencies.