Answer: Moving from red light to violet light, the energy increases. From equation 1 and 2, we say that energy is directly proportional to frequency and inversely proportional to wavelength.
D. All can be measured with standard SI units.
Length can be measured in meters, temperature in degrees centigrade, and density in grams.
C. Convection currents. the currents responsible for powering the movement of tectonic plates is convection currents which occur in the mantle. As the hotter, less dense liquid rises it displaces the cooler more dense liquid which moves the tectonic plates out of allignment<span>
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Well, the current theory says that another planet hit the Earth early in the time when Earth was formed and the debris from this hit later formed the moon: so the best answer from the options is " c. from a portion of Earth" but even better option would be "from another planet that hit the Earth"
