Hurricanes only form over ________?
Hurricanes are like giant engines that use warm, moist air as fuel--which is why they only form over warm ocean waters.
What instrument is used to measure wind speed?
An anemometer is a device that measures wind speed. The first mechanical anemometer was invented in 1450 by Italian artist and architect Leon Battista Alberti.
An earthquake that measures 8 on the Richter Scale would be how many times stronger than an earthquake that measures 4 on the same scale?
The Richter scale is logarithmic, and every whole number means 10 times stronger. So from 4 to 8 would be 10 (5),100 (6),1000 (7) and then 10,000 times stronger (8).
In what type of matter are atoms most tightly packed?
In a solid state, the atoms are closely packed and that is why solids don't easily change their shape
What hormone does the pancreas produce?
How often does Halley's Comet pass Earth?
Halley's comet was recorded by Edmund Halley in 1682. It was seen again in 1758, 1835, 1910, and 1986 -- approximately every 76 years.
What is the most abundant element in the Universe?
Which of the following is NOT a type of mineral?
Wood is organic and thus cannot be a mineral
What percentage of the cells in your body are actually bacteria?
You are more bacteria than human! However, due to the small size of bacteria, they only constitute about 1-3% of our mass
How long does it take an individual blood cell to make a complete circuit of the body?
An individual blood cell should make a complete circuit of the body at least once every 60 seconds.
Who invented dynamite?
It was due to this and many other inventions that Nobel made his money and created the Nobel Prize
How are sharks and rays different from other fish?
Their skeletons are made of flexible and durable cartilage that has about half the density of bone