Biology
It is the most common element in the human body...
What is 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%
These are the only two planets in our solar system without moons... name one
What is Mercury & Venus.
As far as we know, Saturn has the most moons. Saturn has at least 25 satellites that measure at least 6 miles (10 kilometers) in diameter, and several smaller satellites. The largest of Saturn's satellites, Titan, has a diameter of about 3,200 miles (5,150 kilometers) -- larger than the planets Mercury and Pluto.
This type of matter has a definite volume but no definite shape...
What is a Liquid. 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...
What is 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.
This living animal has the heaviest brain...
What is 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 Neil Armstrong set foot on the moon...
What is 1969. At 02:56 GMT on 21 July 1969, Armstrong became the first person to step onto the Moon. He was joined by Aldrin 19 minutes later. The two spent about two hours together outside the lunar module, taking photographs and collecting 21.5 kg of lunar material to be tested back on Earth
This type of chemical bond occurs when one nonmetal bonds with a metal.
What is an ionic bond.
This type of water weighs the most... A: seawater B: distilled water C: tap water D: none - They all have the same weight.
What is 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.
Matter that does not enter chemical reactions is described as this...
What is Inert. Inert matter does not enter chemical reactions.
This is the hardest naturally occurring substance...
What is a 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.
This was the first genetically engineered organism. A: Corn, B: Tobacco, C: Sheep, D: Rat
What is a B. tobacco plant. In 1983, a tobacco plant, designed to be resistant to certain herbicides, was grown in Wisconsin.
These substances speed up the rates of chemical reactions...
What is Catalysts. Catalysts are substances that control the rates of chemical reactions.
The largest hailstone recorded was closest to this sports object in diameter...
What is basketball. The largest hailstone ever recorded was 17.5 inches in diameter - bigger than a basketball.
This large animal has the highest blood pressure...
What is 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.
These are molecules that do not dissolve in water and have low intermolecular forces.
What is a nonpolar molecule.
The first Earth Day was celebrated in this year... A: 1950 B: 1960 C: 1970 D: 1980
What is 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.