Biology
It is the most common element in the human body... A: Carbon, B: Hydrogen, C: Oxygen, D: Calcium
C. Oxygen. It makes up almost 63% of the average human. Following, are major elements and the percentages of the human body that they represent: Oxygen- 62.81% Carbon- 19.37% Hydrogen- 9.31% Nitrogen- 5.14% Sulfur- 0.64% Phosphorus- 0.63% Other- 2.10%
This type of matter has a definite volume but no definite shape... A: Solids, B: Liquids, C: Gases, D: Plasma
B: Liquids. Liquids have a definite volume but no definite shape. Because the intermolecular forces are weak in a liquid, it is able to change its shape to conform to its container.
This geologic formation may be found overhead if you are in a cave... A: stalactites B: stalagmites C: mightymites D: termites
A: stalactites. The ones growing downward are stalactites, the ones growing upward are stalagmites. Stalactites are formed by the deposition of calcium carbonate and other minerals, which is precipitated from mineralized water solutions.
Who discovered gravity?
Isaac Newton
This living animal has the heaviest brain... A: African Bush Elephant, B: Black Rhinoceros, C: Sperm Whale, D: Human
C. Sperm Whales. They have the heaviest brain of any living animal. The average Sperm Whale's brain weighs more than 20 pounds (9 kilograms) which is about 4 times heavier than the average human brain.
This year boasted the first woman in space... A: 1963, B: 1968, C: 1973, D: 1983
A. 1963. The first woman in space was Valentina Vladimirovna Tereshkova in Vostok 6 (U.S.S.R.).
This English chemist and physicist discovered hydrogen. A: Sir William Crookes, B: Henry Cavendish, C: Dorothy Hodgkin, D: Bernard Shaw
B: Henry Cavendish. This English chemist and physicist not only discovered hydrogen, but also determined the mass of the Earth.
This type of water weighs the most... A: seawater B: distilled water C: tap water D: none - They all have the same weight.
A: sea water. It is loaded with mineral salts and weighs about a pound and a half more per cubic foot than fresh water at the same temperature.
How many planets are in the solar system?
8
Of the following, it has the longest recorded life span. A: Termite, B: Chimpanzee, C: Indian Elephant, D: Freshwater Oyster
Freshwater Oyster (80 years.) The longest recorded life span for a termite is 50 years; for a chimapanzee, 50 years; and for an Indian elephant, 70 years.
The three main parts of a comet are the nucleus, the tail, and the _____. A: Zenith, B: Umbra, C: Radiant, D: Coma
D. Coma. The coma consists of gases and dust around the nucleus.
Matter that does not enter chemical reactions is described as this... A: Inhibited, B: Inert, C: Grounded, D: Radioactive
B: Inert. Inert matter does not enter chemical reactions.
This is the hardest naturally occurring substance... A: emerald B: tourmaline C: diamond D: corrundum
C: Diamond. Diamond is also one of the most valuable natural substances. Diamonds are crystals formed almost entirely of carbon. Because of its hardness, the diamond is the most enduring of all gemstones. They are among the most costly jewels in the world, partly because they are rare, Only four important diamond fields have been found - in Africa, South America, India, and the Soviet Union.
Does sound or light travel faster?
Light
This was the first genetically engineered organism. A: Corn, B: Tobacco, C: Sheep, D: Rat
B. tobacco plant. In 1983, a tobacco plant, designed to be resistant to certain herbicides, was grown in Wisconsin.
It is the term for the condition when three celestial bodies are arranged in a straight line... A: Occultation, B: Parallax, C: Syzygy, D: Triple Transit
C: Syzygy. Syzygy is the condition when three celestial bodies are arranged in a straight line--as, for example, when the Sun, Moon, and Earth are aligned during solar and lunar eclipses.
These substances control the rates of chemical reactions... A: Reactants, B: Catalysts, C: Isotopes, D: Cathodes
B: Catalysts. Catalysts are substances that control the rates of chemical reactions.
The largest hailstone recorded was closest to this object in diameter... A: basketball B: softball C: tennis ball D: golf ball
A: basketball. The largest hailstone ever recorded was 17.5 inches in diameter - bigger than a basketball.
Who invented light bulbs?
Thomas Edison
This animal has the highest blood pressure... A: Giraffe, B: Blue Whale, C: Elephant, D: Flea
A: Giraffe. Because of its extremely long neck, the giraffe must rely on its oversized heart (two feet long and twenty-five pounds!) to pump blood all the way to its head. As a result, the giraffe has the highest blood pressure of any animal: 280/180 mmHg (millimeters of mercury) at heart level when prone -- more than twice the blood pressure of an average human. Not surprisingly, because of their high blood pressure, giraffes are prone to heart attacks.
The planets make up this percentage of the mass in our solar system... A: 0.0135 %, B: 0.135 %, C: 1.35 %, D: 13.5 %
B: 0.135 % of the mass in our solar system. The Sun dominates, accounting for 99.86 % of the entire solar system's mass.
These are microscopic spheres of 60 atoms of pure carbon in a spherelike structure that resembles a geodesic dome... A: Hydrocarbons, B: Lipids, C: Crystals, D: Buckyballs
D: Buckyballs. "Buckyballs" are microscopic spheres of 60 atoms of pure carbon in a spherelike structure that resembles a geodosic dome. Also called fullerenes or buckminsterfullerenes, they were named after R. Buckminster Fuller who invented the geodosic dome. Buckyballs are of great interest to scientists because they contain a cavity large enough to hold other elements, even whole molecules. Once an element has been deposited into the cavity, it cannot emerge without being heated to high temperatures. This technology may someday be used to deliver medication to specific locations within the body.
The first Earth Day was celebrated in this year... A: 1950 B: 1960 C: 1970 D: 1980
C: 1970. The first Earth Day was celebrated on April 22, 1970, and has been celebrated each year following on April 22nd. The original purpose of Earth Day was to inspire people to think and act more environmentally. Earth Day falls on or around the birthdays of several environmental spokespersons.
If a feather and a rock were dropped at the same time and height, which would hit the ground first (no air resistance)
They will hit the ground at the same time