The word 'alphabet' comes from which two Greek letters?
AnswerAlpha and beta
'Alphabet' joins the names of the first two Greek letters.
Science · Facts & stats
Beta facts & stats
7 fact-checked facts about the letter beta, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Beta-carotene gives which vegetable its orange color?
AnswerCarrots
Beta-carotene is an orange pigment abundant in carrots; beetroot's red comes from betalains.
Going deeper
A beta particle emitted in beta-minus decay is what?
AnswerAn electron
Beta-minus radiation is a fast electron; alpha particles are helium nuclei and gamma rays are photons.
The body converts beta-carotene into which vitamin?
AnswerVitamin A
Beta-carotene is a provitamin that the body can convert into vitamin A.
In beta-minus decay, a neutron changes into what?
AnswerA proton
In beta-minus decay a neutron inside the nucleus turns into a proton, and a fast electron is emitted.
Expert level
Carbon-14 turns into which element when it undergoes beta decay?
AnswerNitrogen
When a neutron in carbon-14 becomes a proton, the atom becomes nitrogen-14.
Along with an electron, beta-minus decay releases which nearly massless particle?
AnswerAn antineutrino
The antineutrino carries away some energy, which explained why beta electrons have a range of energies.
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