Trivia questions (5 of 15)
- Multiple Choice
1. What is the common unit of measurement for the relative loudness of sound?
Decibels (dB) are units of sound pressure levels measured using a logarithmic scale. A very quiet room is about 25 dB, normal conversation around 50 db, a chainsaw about 110 dB, and a firecracker about 170 dB.
- Multiple Choice
2. What is the chemical symbol for sodium on the periodic table of elements?
The symbol for sodium, Na, comes from the Latin natrium, and its atomic number is 11. In its pure form, sodium is a soft metal and can be synthesized from other compounds. It is most frequently found in the form of sodium chloride (NaCl), the basic form of salt.
- Multiple Choice
3. Which well-known scientist wrote the novel "Contact," about mankind's first contact with extraterrestrial intelligence?
Carl Sagan wrote many popular books advocating and illuminating scientific topics as well as starred in the popular 1980 PBS program "Cosmos: A Personal Voyage," which explained scientific concepts for the general public.
"Contact" was adapted into a film starring Jodie Foster and Matthew McConaughey in 1997.
- Multiple Choice
4. What percentage of Earth's oxygen is produced by the 2.7 million square mile Amazon rainforest?
FUN FACT
The Amazon rainforest produces roughly twenty percent of the Earth's oxygen supply and has the highest ratio of plant biodiversity on the planet, with 90,000 tonnes of plants per square kilometer.
- Multiple Choice
5. Who is the first person to orbit Earth from outer space?
On April 12, 1961, Soviet cosmonaut Yuri Gagarin entered outer space and orbited Earth, giving Russia a lead in the "space race" with the United States.
In 1962, John Glenn became the first American to orbit Earth.
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