What rule gives the direction of the magnetic field around a straight current-carrying wire?
Answer
Right-hand grip rule
92040 Intermediate Trivia Questions
92040 public questions at this depth. How many can you answer?
What is the approximate speed of electromagnetic waves in a vacuum?
Answer
299,792,458 metres per second
What law explains why electric current is the same at every point in a simple series circuit?
Answer
Kirchhoff’s current law
What type of current periodically reverses direction in an electrical circuit?
Answer
Alternating current
What device converts mechanical energy into electrical energy using electromagnetic induction?
Answer
Electric generator
Which compound is commonly called laughing gas?
Answer
Nitrous oxide
Which compound is known as hydrochloric acid when dissolved in water?
Answer
Hydrogen chloride
Which chemical element is named after the country Poland?
Answer
Polonium
Which compound is the main active ingredient in household bleach?
Answer
Sodium hypochlorite
Which chemical element has atomic number 79?
Answer
Gold
Which compound, NH₃, is commonly called ammonia?
Answer
Ammonia
Which element is the most electronegative on the Pauling scale?
Answer
Fluorine
Which element was named after the dwarf planet Ceres?
Answer
Cerium
Which acid gives vinegar its characteristic sour taste?
Answer
Acetic acid
Which fossil hominin, discovered in Ethiopia in 1974, is famously known as Lucy?
Answer
Australopithecus afarensis
In evolutionary biology, what type of natural selection favors individuals with intermediate traits?
Answer
Stabilizing selection
Which British moth became a classic example of industrial melanism?
Answer
Peppered moth
Who coined the phrase “survival of the fittest” in evolutionary biology?
Answer
Herbert Spencer
What is the name of evolution in which unrelated organisms independently develop similar traits?
Answer
Convergent evolution
What name is given to the rapid diversification of one ancestral species into many ecological forms?
Answer
Adaptive radiation
Which marine reptile is the largest living turtle?
Answer
Leatherback sea turtle
Which whale is famous for using bubble nets to concentrate prey?
Answer
Humpback whale
What type of colonial animal is a Portuguese man o' war?
Answer
Siphonophore
What is the largest living species of sea star?
Answer
Sunflower sea star
A narwhal's tusk is what anatomical structure?
Answer
An elongated tooth
Which reptile is found naturally only in the Galápagos Islands and feeds in the sea?
Answer
Marine iguana
What toxin gives the blue-ringed octopus its dangerous bite?
Answer
Tetrodotoxin
What natural material forms the hard shells of most mollusks such as clams and oysters?
Answer
Calcium carbonate
What process allows corals with algae to produce much of their food using sunlight?
Answer
Photosynthesis
Which DeepMind AI reached Grandmaster level in StarCraft II in 2019?
Answer
AlphaStar