(Q).
Q: Distance traveled divided by time is equal to what?   Read this paragraph and choose the correct option from the provided answers:  Average speed is calculated by dividing the total distance travelled by the time interval. For example, someone who takes 40 minutes to drive 20 miles north and then 20 miles south (to end up at the same place), has an average speed of 40 miles divided by 40 minutes, or 1 mile per minute (60 mph). Average velocity, however, involves total displacement, instead of distance. It is calculated by dividing the total displacement by the time interval. In this example, the driver's displacement is zero, which makes the average velocity zero mph.   Choices:  - direction  - momentum  - frequency  - speed   A:
(A).
speed


(Q).
Q: Besides the uppermost mantle, what else is the lithosphere composed of?   Read this paragraph and choose the correct option from the provided answers:  The lithosphere is composed of both the crust and the uppermost mantle. The lithosphere is a brittle, rigid solid. It is easily cracked or broken.   Choices:  - surface  - outer core  - inner core  - crust   A:
(A).
crust


(Q).
Q: Which of the electromagnetic waves have the shortest wavelengths and highest frequencies?   Read this paragraph and choose the correct option from the provided answers:  Of all electromagnetic waves, gamma rays have the shortest wavelengths and highest frequencies. Because of their very high frequencies, gamma rays have more energy than any other electromagnetic waves.   Choices:  - ultraviolet  - beta  - plasma  - gamma   A:
(A).

gamma