10 science trivia

Answer 1

Nile River is a longest river in the world.

Light travels at speeds of 300,000km/s.

There are 206 bones in the average adult.

Deepest part of ocean is approx 10,000km, somewhere in the Pacific.

Marijuana has been suggested to have cancer healing abilities.

Australia is drifting towards Antarctica 20mm per year.

Average human has over 80,000km of blood vessels.

The brain generates roughly 11W/h.

The observable universe spans approximately 13.4 billion light years.

The human eye can view 248 megapixels spread over 130 degrees horizontally.

Answer 2

1. A number of chemists died using the old scientific method of discovering the elements. They had to use as many of the 5 senses as possible and never lived to discover element 17 on the periodic table. The chlorine gas just killed them before they could discover it.

2. If you pour some salt into a beaker full of water, the level will actually go down.

3. Unlike many substances, water expands as it freezes. An ice cube takes up about 9% more volume than the water to make it.

4. There is about 1/2 lb or 250 g of salt (NaCl) in the average adult human body.

5. One chemical name for water (H2O) is dihydrogen monoxide.

6. A pure element can take many forms. For example, diamond and graphite both are forms of pure carbon.

7. There is no J on the Periodic Table.

8. Lighting strikes help the atmosphere by producing O3 gas, otherwise known as ozone.

9. While oxygen is colorless, the liquid and solid forms can appear blue.

10. The only two non-silvery metals are copper and gold.

Answer 3

1. The smallest bone in the human body is the stirrup bone located in the ear.
2. The periodic table is organized by atomic number, which is the number of protons in an atom's nucleus.
3. The Earth's atmosphere is composed primarily of nitrogen (about 78%) and oxygen (about 21%).
4. Sound travels faster in water than in air.
5. The process by which plants convert sunlight into energy is called photosynthesis.
6. The Earth's core is composed mainly of iron and nickel.
7. DNA is a molecule that contains the genetic instructions for the development and functioning of all living organisms.
8. The speed of light in a vacuum is approximately 186,282 miles per second.
9. The theory of relativity, proposed by Albert Einstein, revolutionized our understanding of space and time.
10. The human body is made up of about 60% water.