Radioactive Decay
This type of decay releases a helium nucleus
Alpha decay
This part of an atom is split during nuclear fission
Nucleus
Which australian state or territory has the largest population?
NSW
This term refers to the time taken for one half of the atomic nuclei to decay
Half-life
Trivia Question: How many signs are there in the Zodiac?
12
In beta decay, this particle is emitted when a neutron turns into a proton
Electron, beta particle
This isotope of uranium is the most common fuel in nuclear reactors.
Uranium-235
Which bone are babies born without?
Kneecap / patella
If the half-life of a substance is 10 years, this percentage of the substance will remain after 20 years
25%
Trivia Question: What substance are finger nails made out of?
Keratin
This form of decay emits high-energy electromagnetic radiation without releasing any particles
Gamma decay
This term describes a self-sustaining series of nuclear fission reactions
Chain reaction
What do you call a group of horses?
A herd
This is the half-life of carbon-14, which is used in dating fossils
5730 years
(a-2 x a3)4 =
a4
Alpha particles are stopped by this common material
Paper
Besides energy, these particles are released during nuclear fission
Neutrons
How man players (per term) start on the pitch in field hockey?
11
After this many half-lives, 12.5% of the original material remains
3 half-lives
Trivia Question: What does a Scoville unit measure?
Spiciness
This type of particle is emitted during beta-plus decay, turning a proton into a neutron
Positron
Which historical event first demonstrated the power of uncontrolled nuclear fission?
The bombing of Hiroshima (1945)
How many teeth does an ADULT human have?
32
If a material decays for 100 grams to 12.5 grams in 12 years, this is the half-life of the material
4 years
Trivia Question: What is the hardest substance in our body?
Tooth enamel