(Q).
Q: What is the difference between the daily high and the daily low? Choices: - weather forecast - margin of error - sunrise and sunset - tidal change A:
(A).
tidal change

(Q).
Q: What is the goal of science? Choices: - improve knowledge - improve life expectancy - gain scholarships - increase knowledge A:
(A).
increase knowledge

(Q).
Q: Average acceleration is the rate of change of what? Choices: - direction - speed - displacement - velocity A:
(A).
velocity