What is the coastal tidal range? the difference in sea level between a successive high and low tide When would the oceans experience the greatest tidal range? when Earth is in perihelion and the Moon is in perigee What is the difference between perihelion and aphelion? Perihelion is when Earth is closest to the Sun, and aphelion is when it is farthest from the Sun. What causes variation in Earth's tides over time? the elliptical orbits of the Moon around Earth, and Earth around the Sun. Tides are greatest when the Moon is at perigee and Earth is at perihelion. Neap tides result from destructive interference between the solar and lunar tidal bulges. Spring tides result from constructive interference between the solar and lunar tidal bulges. A lunar or solar eclipse can occur only when the Moon is in syzygy. Which of the following statements about tides in a simple tidal bulge model is/are true? Choose all that apply.
Moon planet influence ocean tide graph full#
The full moon is associated with spring tide conditions. The full moon and the new moon affect the tides about the same. Of the following statements about the monthly tidal cycle, which is/are true? Choose all that apply. At what time on Saturday should you plan to arrive and start fishing? 3:40 p.m. You do not have a tide table, but you have noted that today's high tide was at 1:10 p.m. You have heard that fishing is best at your chosen spot when the ebb current begins to flow, so you wish to start fishing at high tide. If the side of the Earth that faces the moon experiences a high tide, then the side of the Earth that is opposite from the moon will have a/an: high tide A lunar day is: 24 hours and 50 minutes in duration It is Wednesday, and you are planning a fishing trip for this coming Saturday. centripetal The tide-generating force varies: inversely with the cube of the distance between the objects. tide-generating The center of mass of the Earth-Moon system is called the: barycenter The _ force pulls an orbiting body toward the center of that orbit. gravitational The force that creates two simultaneous ocean bulges on opposite sides of Earth, directed toward or away from the Moon, is called the _ force. at the nadir The attraction between Earth and the Moon is an example of _ force. Which of the red arrows would represent the resultant force? B Where is/are Earth's tidal bulge(s) located? - at the zenith This is because the Earth's gravity is pulling you back down.What is Newton's Law of Universal Gravitation? F = Gm1m2/r2 In the figure above, assume black arrow (1) is the gravitational force and black arrow (2) is the centripetal force on the surface of a hypothetical planet. You will have noticed that every time you jump, you always land back on the ground. The Moon affects the tides because of gravity.
The Sun and the Earth can also affect the tides.
The Moon has the most effect on the tides, but it's not the only factor that affects them.
If there are two high tides and two low tides, like you see in Victoria, it's called a semi-diurnal tide cycle. If there's one high tide and one low tide a day, like you would see if you went on holiday to Perth, it's called a diurnal tide cycle. The rise and fall of the tides is known as the tide cycle. When it falls to its lowest point, that's called low tide. When the sea level rises to its highest point, we call that high tide. Tides are the rise and fall of water level in the oceans (and lakes, and even in your cup of water, but they're very small). Even though the Moon is so far away, it is large enough that its force of gravity is strong enough to do that.īut before we get into how the Moon affects tides, let's look at what tides are. The short answer is that the Moon's gravity pulls the oceans (and us) towards it. Lachie from Melbourne wants to know how the Moon, being so far away, affects the tides on Earth. The Conversation is asking kids to send in questions they'd like an expert to answer.
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