Is tea a colloid suspension or solution? A mixture with particles that can be easily seen and separated by being filtered or settling. If you try to put too much sugar into a cup of tea, it will not fully dissolve and will leave some sugar on the bottom of the cup, making the tea […]
What evidence does the fossil record provide?
What evidence does the fossil record provide? Fossils document the existence of now-extinct species, showing that different organisms have lived on Earth during different periods of the planet’s history. They can also help scientists reconstruct the evolutionary histories of present-day species. Why are fossils so hard to find? Fossils are rare because their formation and […]
What is the difference between rising and sinking air?
What is the difference between rising and sinking air? Rising air always cools, and, conversely, sinking air always warms. This type of temperature change, which is caused simply by ascent or descent in the atmosphere, is called adiabatic cooling or warming. When air moves vertically, its pressure changes. What is the diff between climate and […]
Who is the father of atom?
Who is the father of atom? Basic Atomic Structure. The idea that everything is made of atoms was pioneered by John Dalton (1766-1844) in a book he published in 1808. He is sometimes called the “father” of atomic theory, but judging from this photo on the right “grandfather” might be a better term. How thick […]
Is any closed conducting path?
Is any closed conducting path? There must be a closed conducting loop from the positive to the negative terminal in order to establish a circuit and to have a current. When this occurs, the circuit is opened and a closed conducting loop no longer exists. Without a closed conducting loop, there can be no circuit, […]
What will JB Weld not stick to?
What will JB Weld not stick to? When fully cured, J-B Weld is completely resistant to water, gasoline, and about every other petroleum product or automotive chemical. For wet-surface or submerged water or gasoline repairs, try our SteelStik or WaterWeld. How long will JB Weld last? CURE AND SET TIME: After mixing the tubes at […]
How far away is a parsec in light years?
How far away is a parsec in light years? 3.26 light years What can Parallax be used to calculate quizlet? Parallax measurements work by measuring the relative change in position of stars as the earth goes around the sun. Apparent Magnitude is the star’s brightness as it appears from earth. absolute magnitude is the apparent […]
Why are light bulbs brighter in a parallel circuit?
Why are light bulbs brighter in a parallel circuit? When the bulbs are in parallel, each bulb sees the full voltage V so P=V2R. Since a bulb glows brighter when it gets more power the ones in parallel will glow brighter. See, the parallel combination of resistors reduces the effective resistance of the circuit. Hence […]
Has a hurricane ever hit Mississippi?
Has a hurricane ever hit Mississippi? 1969: Hurricane Camille Hurricane Camille is one of just four Category 5 storms to make landfall in the continental United States, according to the National Weather Service. The storm made landfall near Waveland, Mississippi, in August 1969. Storm surge reached almost 25 feet in parts of Mississippi. What was […]
Why do things stick to glass?
Why do things stick to glass? The short answer is that glass–an amorphous compound containing primarily silicon and oxygen–tends to form something known as silanol on its surface. They form hydrogen bonds with liquid water, causing it to adhere to the surface of the glass very strongly. Why does water wet glass and mercury doesn […]