Which of the following describes the bending of light due to a change in its speed?
a. refraction
b. transmission
c. absorption
d. reflection

Which type of current is produced by a wire breaking magnetic field lines and changing the polarity? a. alternating b. direct c. straight d. alternating and direct

25pts the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram