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Asked in Astronomy
Is the apparent movement of a star used to measure its distance from Earth?
Sort of. Actually, what is measured is changes in the apparent movement, as a result of the parallax caused by Earth's movement around the Sun. ...
Asked in Physics
When the earth revolves around the sun that motion is accelerated or not?
It sure is accelerated. Acceleration refers to the rate of change of velocity, and since the direction of movement changes, the velocity changes as well. ...
Asked in Airplanes and Aircraft
What is a side to side movement of the nose of an airplane is called?
yaw rotation is a movement around the yaw axis of a rigid body that changes the direction it is pointing, to the left or right of its direction of motion. ...
Asked in Science, Astronomy, The Sun
When on a equator day will the overhead the earth at midday?
If you are at the equator, the SUN will be directly overhead during the equinoxes - around 21 March, and 23 September. ...
Asked in Earth Sciences, The Sun
Which part of the Earth receives most of the Sun's energy?
The answer is easy - that part of the Earth where the Sun is DIRECTLY OVERHEAD at mid day. However, the answer is also complex because this point moves on a daily basis between the latitudes of the Tropic of Capricorn in the southern hemisphere where it is overhead on or around the 21st December the southern "solstice" and the Tropic of Cancer in the northern hemisphere where it is overhead on or around the 21st June the northern "solstice". This movement...
Asked in Astronomy, Aristotle, Copernicus
How could people believe that the earth was the center of the universe?
It certainly looks that way. You can't feel the movement of the Earth around the Sun, the movement of the Solar System around the Milky Way, etc. It certainly looks that way. You can't feel the movement of the Earth around the Sun, the movement of the Solar System around the Milky Way, etc. It certainly looks that way. You can't feel the movement of the Earth around the Sun, the movement of the Solar System around the Milky Way, etc. It certainly looks...
Asked in Astronomy, Stars
How do scientists know how far away the stars are?
For near-by stars, the parallax method is used - the star changes its apparent position due to Earth's movement around the Sun. ...
Asked in Units of Measure, Volcanoes
What instrument is used to monitor and measure a volcano surface?
A tiltmeter is an instrument placed around and on a volcano that measures any changes in the surface movement. A tiltmeter utilizes a fluid filled container to monitor these changes and then sends data via computer. ...
Asked in Science, Astronomy, Travel & Places
Why don't we feel the Earth spinning or moving?
Because we're moving at the same speed as the planet ! Standing on the surface, we move at the same speed the Earth rotates. We're also moving through space at the same speed the Earth revolves around the sun. Therefore - we don't feel the movement of the Earth. ...
Asked in Astronomy, The Moon
What time is third quarter moon directly overhead?
Unless you live in the tropics, the Moon is _NEVER_ directly overhead. If that's you, then the 3rd quarter Moon, which rises about midnight and sets around noon, would be directly overhead at sunrise, perhaps once per decade. ...
Asked in Planetary Science
Do all planets rotate around the sun at the same speed?
No. Their orbital velocities are all different and indeed the speed of the movement for any one planet changes with time because the orbits are elliptical. ...
Asked in Chemistry
What is molecular movement phase changes?
Phase change is when a substance changes it's phase to either a solid, liquid, or gas. Solids have the least molecular movement because the molecules are so tightly bonded that they only vibrate. Liquids have the next fastest molecular movement, because the molecules tend to "flow" over each other. They are still bonded, like solids, but just not as tightly. This is why they move faster. Gases, however, have the fastest molecular movement. The molecules "zip" around and move wherever they want. They are...
Asked in American Cars
When was the first overhead valve 6-cylinder engine made?
The original overhead valve or OHV piston engine was developed by the Scottish-American David Dunbar Buick around 1902. ...