The world spins around because of the way the solar system was formed as a spinning cloud of matter. This then it began to collapse in on itself as it did this the heat at the centre became so great that the sun ignited and pushed out all the matter which then formed the planets, still spinning because of the energy from the explosion as the sun ignited.
Supplement 2 As far as the planets are concerned, they would have had some net rotational momentum, the residual of all the components that made the planet.
This rotational energy cannot be destroyed - it however might be cancelled out by opposite-spin material.
BUT back to the question. The Earth carries the residual net spin from its assembly from space debris.
Answer:
The rotation comes about from the conservation of angular momentum. The formula for angular momentum is:
L=mwr2
Due to conservation of angular momentum, as the radius of the orbit decreases, then its angular velocity must increase (as the mass is constant). As a consequence the parts of the planet closer to the primary (the Sun) must rotate faster than the parts furthest from the Sun. This causes the spin.
This all relates to the fact that planetary and stellar systems are born from the collapse of dense interstellar clouds. As the clouds collapse even a small rotation is magnified by the contraction. If the clouds were not rotating (matter fell straight to the center of the system) there would be no planets.
To turn on an axis, you can rotate an object or yourself around a specific line in a circular motion. This is commonly done in activities like dancing, gymnastics, or sports to change direction or orientation.
Mercury's axis tilt is 0°. Venus' axis tilt is 177.4°. Earth's axis tilt is 23.5°. Mars' axis tilt is 25.2°. Jupiter's axis tilt is 3.1°. Saturn's axis tilt is 25.3°. Uranus' axis tilt is 97.8°. Neptune's axis tilt is 28.8°. Pluto's axis tilt is 122.5°.
The optical axis is an imaginary line that passes through the center of a lens or mirror, while the visual axis is the line connecting the fovea (center of the retina) to the object being viewed. The optical axis is used in optics to describe the path of light through a lens system, while the visual axis describes the line of sight in relation to the eye.
Earth takes 24 hours to revolve on its axis. A revolution is orbiting around the sun and not on its axis.
The horizon axis is the line in a graph that represents the range or domain of the data being plotted. It is typically the horizontal axis, also known as the x-axis, and shows the independent variable in a mathematical relationship.
No, an axis is not a pivot joint. An axis is an imaginary line around which a joint rotates, while a pivot joint is a specific type of joint that allows for rotation around a central point, like the joint in the neck that allows the head to rotate side to side.
turn on an axis: pivot
shaft, pole, pivot, stem
Between the atlas and the axis
pivot, shaft, axle, spindle, centre line
The pivot joint in the neck the atlantoaxial joint, and it is at C1 and C2. These bones are also called the atlas and the axis.
The axis (C2) bears a peg-shaped dens that acts as a pivot, it is part of the cervical vertebrae.
There is only one pivot joint in the body and it is located in the neck. It is the joint between the first and second cervical vertebrae also known as atlas and axis respectively. Axis has a the "peg" part of the pivot projecting upwards and atlas has the hole around it. This is the joint that allows the heart to rotate left to right.There are two pivot joints. One between C1 and C2 of the vertebrae. The second in the forearm between the ulna and radius.
Atlaswrong . the correct answer is axis (http://en.wikipedia.org/wiki/Axis_(anatomy)) "It forms the pivot upon which the first cervical vertebra (the atlas), which carries the head, rotates."
rotationUNIAXIAL ROTATIONyesThe pivot joint moves by twisting and rotating around.It is located at the neck and lower arm. The pivot joint is one of the four types of the moveable joints.The only immovable joint is at the skull. :)moveRotationuniaxial rotationUniaxial rotationA pivot joint permits lateral rotation or side to side movement. An example of this type of joint in your body is the C2 vertebra, called axis. The axis (a pivot joint) allows you to shake your head to indicate no.movement allowed in a pivot joint is known as?
Yes in between atlas and axis lets you shake your headAnswerI was just thinking that, though I thought a pivot joint would be a little more obvious.its called the dens, and its on the axis
Pivot joint?