What Causes Tides? | NOAA SciJinks – All About Weather
EarthSky | Tides, and the pull of the moon and sun
NOVA - Official Website | What Causes the Tides?
Why are there two high tides and two low tides every day?
TIDAL VARIATIONS The Moon has another large effect on the Earth arising from its gravitational pull on the Earth. The Moon raises ocean tides and land tides on the Earth. Here, we discuss ocean tides (the land tides have much smaller amplitude, on the ...