What is the Roman numeral for 500?
Correct answer: D
In Roman numerals, D represents 500. Roman numerals combine letters with fixed values; subtractive notation is used in examples such as IV for 4 and IX for 9.
Further reading: www.britannica.com ↗
Elements, Science & Retro Computers
This ten-question science mix links chemical symbols, the human body, genetics and the history of technology. Questions cover chemical symbols, noble gases, a structure of blood vessels near the brain, crossing over during meiosis and a notable hurricane. A British home computer, a genetically engineered flower, Roman numerals and a mathematician known for game theory widen the selection. Notice when the prompt asks for a classification, a date or a scientific term.
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Prepare for Elements, Science & Retro Computers
As you answer, separate observations from explanations. What evidence would support a claim, and could something else explain the result?
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- What is the Roman numeral for 500?
- The Electron computer was released in Britain during 1983 for the home computing market, by which company?
- Which element has the chemical symbol O?
Choose one answer per question. When you finish, review your results and read the explanations to understand any mistakes.
10 of 10 questions currently include additional explanations.
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The Electron computer was released in Britain during 1983 for the home computing market, by which company?
Correct answer: Acorn Computers
Acorn Computers released the BBC Micro’s lower-cost companion, the Acorn Electron, in Britain in 1983.
Which element has the chemical symbol O?
Correct answer: Oxygen
The symbol O stands for oxygen, an element with atomic number 8. Oxygen gas commonly occurs as O₂, a molecule made of two oxygen atoms.
Name the anastomotic loop of vessels near the base of the brain.
Correct answer: Circle of Willis
The Circle of Willis is an arterial anastomotic ring located near the base of the brain.
Which flower colour was the target of Suntory's genetically engineered rose project, whose success was announced in 2004?
Correct answer: Blue
The project targeted blue roses. Suntory introduced genes enabling roses to accumulate the blue pigment delphinidin and announced the result in 2004. This does not mean that a rose with a pure blue appearance is easy to produce.
What is the chemical symbol for Vanadium?
Correct answer: V
Vanadium’s chemical symbol is V and its atomic number is 23. It is a transition metal used in some steel alloys because small amounts can increase strength and wear resistance.
Further reading: www.rsc.org ↗
Which noble gas has the lowest atomic number?
Correct answer: Helium
Helium has atomic number 2, the lowest atomic number among the noble gases. Its full outer electron shell makes it chemically very unreactive under ordinary conditions.
Further reading: www.rsc.org ↗
What was the category of the 2005 hurricane, Hurricane Katrina, in the Saffir-Simpson hurricane wind scale?
Correct answer: Category 5
Hurricane Katrina reached Category 5 intensity over the Gulf of Mexico in August 2005, before making landfall on the US Gulf Coast at lower intensity. The Saffir–Simpson scale classifies hurricanes by sustained wind speed, not by rainfall or storm surge.
Further reading: www.nhc.noaa.gov ↗
During which stage of meiosis does crossing over normally occur?
Correct answer: Prophase I
Crossing over between homologous chromosomes normally occurs during prophase I.
Which of the following mathematicians made major contributions to game theory?
Correct answer: John Von Neumann
John von Neumann was a foundational figure in game theory and coauthored the influential book Theory of Games and Economic Behavior.
Explore the questionsBrowse all 10 questions in this quiz
- What is the Roman numeral for 500?
- The Electron computer was released in Britain during 1983 for the home computing market, by which company?
- Which element has the chemical symbol O?
- Name the anastomotic loop of vessels near the base of the brain.
- Which flower colour was the target of Suntory's genetically engineered rose project, whose success was announced in 2004?
- What is the chemical symbol for Vanadium?
- Which noble gas has the lowest atomic number?
- What was the category of the 2005 hurricane, Hurricane Katrina, in the Saffir-Simpson hurricane wind scale?
- During which stage of meiosis does crossing over normally occur?
- Which of the following mathematicians made major contributions to game theory?
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