A student monitored tides using a webcam. She noticed that the tide reached different parts of the shore at different times of day. Which factors can explain the student's observations?
A. The moon's gravity and Earth's rotation
B. Temperature and salinity
C. The ocean's conveyor belt and refraction
D. Earthquakes and volcanoes
The main factors that create the tide effect are A. the moon's gravity and the Earth's rotation. It was Isaac Newton who first discovered that the moons gravity, and Sir Edmund Hailey was the first to note the Earth's rotation affected tides.
