Gas is heavier than oxygen. Cold air is heavir than hot air
It depends on the type of rocket.
Oceanic crust is both denser (and therefore heavier) and younger than continental crust.
kind
the answer is silver which is a precious metal other than gold or another type of metal.
A breed of horse heavier than the Thoroughbred, but similar in type. Standardbreds have a calm temperament and are used in harness racing.
Coal can be heavier or lighter than water depending on its type. Most types of coal are heavier than water in terms of density, however, broken bituminous coal has only a density of 0.833 kg/m3, so it is lighter than water.
A bone scan, or x-ray is simply a different type of scan than an MRI. No kind of scan is better than another, it simply depends what the scan is trying to ascertain.
Depends a bit on the age and type of lion. but generally the elephant will be heavier.
Answer: That probably would depend on the type of wood (e.g. ironwood vs balsa.?Answer: No wood is as heavy as iron. Iron would be heavier. Iron has a density of about 8 gram per cubic centimeter; would is usually lighter than water (density less than 1), but some woods are a little heavier than water.
There are "lighter-than-air" craft which are known as blimps or balloons, "heavier-than-air" craft which are divided into fixed-wing (airplanes) and rotary wings (helicopters).
an Airship is an aircraft of the lighter-than-air type sustained in the air by gas an aeroplane in a mechanically propelled heavier-than-air flying machine
Multiple choice is an example of one kind of test. Another type of test is fill in the blank or essay. An essay test, requires more knowledge and more writing than a multiple choice test.