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We have several reference points on the Earth's surface, for our convenience. The North and South Poles are a couple. The choice of Greenwich as the zero longitude, and of the International Date Line are another two. These points have no specific feature on the surface, they are decided on for the convenience of the users.
What else can I help you with?
For determining motion the surface of earth is a common?
reference point
What is the most common reference point for detecting motion?
Earth's surface is a common reference point for detecting motion.
What is the most common reference point for determining position and motion?
Earth's surface is a common reference point for determining position and motion.
How long does a revolution of earth take?
It takes one year for the earth to make a revolution around the sun.Depending upon your reference point, it takes 27.3 days for the moon to orbit the earth if you use the earth as the reference point. This is called the sidereal month. If you use the sun as the reference point, then it takes 29.5 days for the moon to orbit the earth. This is called the synodic month.
Polaris is used as a celestial reference point for earth's latitude system because polaris?
Polaris is used as a celestial reference point for Earth's latitude system because it is located almost directly above the North Pole. This means that it remains relatively fixed in the sky as the Earth rotates, making it a reliable reference point for determining one's latitude in the Northern Hemisphere.
What is the time it takes earth to spin on its own axis?
About a day, depending on the reference point. Using the Sun as a reference point, it is a day - that is the way the day is defined. But Earth also moves around the Sun in an orbit; if a you use a distant star as a reference point, Earth rotates around its axis once in 23h56m, approximately.
What are the two basic points of reference on the surface of the earth?
The two basic points of reference on the surface of the Earth are the North Pole and the South Pole. These points represent the northernmost and southernmost points on Earth's axis of rotation, respectively.
What is the most common frame of reference for measuring motion?
The most common frame of reference for measuring motion is the Earth or an observer on the Earth. Motion is often described in relation to fixed landmarks or objects on Earth's surface. This allows for a consistent point of reference to determine the speed, direction, and acceleration of an object.
Is potential energy on the surface of earth is always zero?
That depends on what reference level you have chosen. If the (arbitrary) reference level you chose is Earth's surface, then anything on the Earth's surface has zero potential energy. If you choose some higher reference level, an object on Earth's surface has a negative potential energy. If you choose a lower reference level, an object on Earth's surface would have a positive potential energy.
Why does electricity earth it self?
The mass of the Earth is the reference point. All man-made generators are grounded to the Earth. Lightning just evens itself out.
If a bird hovers inside a train whilst that train is moving then presumably it is travelling at the same speed as the train Why is this and why is it not thown to the back of a carriage?
What pushes us back is a change in velocity (i.e., an acceleration), not the velocity itself. You might as well say that the train is stationary, and that planet Earth is moving under the train. In outer space, there is no fixed reference point; and it doesn't make sense to speak of the "real" velocity. A velocity must always be indicated with relationship to some reference point. Using the Earth as a reference point is convenient, but it isn't the only option.What pushes us back is a change in velocity (i.e., an acceleration), not the velocity itself. You might as well say that the train is stationary, and that planet Earth is moving under the train. In outer space, there is no fixed reference point; and it doesn't make sense to speak of the "real" velocity. A velocity must always be indicated with relationship to some reference point. Using the Earth as a reference point is convenient, but it isn't the only option.What pushes us back is a change in velocity (i.e., an acceleration), not the velocity itself. You might as well say that the train is stationary, and that planet Earth is moving under the train. In outer space, there is no fixed reference point; and it doesn't make sense to speak of the "real" velocity. A velocity must always be indicated with relationship to some reference point. Using the Earth as a reference point is convenient, but it isn't the only option.What pushes us back is a change in velocity (i.e., an acceleration), not the velocity itself. You might as well say that the train is stationary, and that planet Earth is moving under the train. In outer space, there is no fixed reference point; and it doesn't make sense to speak of the "real" velocity. A velocity must always be indicated with relationship to some reference point. Using the Earth as a reference point is convenient, but it isn't the only option.
Does the moon revolve around the earht?
It depends upon your point of reference. If you are on the earth, your point of reference is the earth and you deem the moon to rotate around the earth. If you are on the moon, your point of reference is the moon and so you consider the earth to be moving around the moon. Consider two people holding hands opposite one another and swinging around. Who is revolving around whom?! If one is static, it makes no difference as the one rotating can presume that everything else is rotating around themself!
