Homework
Homework 2
Radiation Kills
Finding Radiation
Breaking Atoms
100
#1 How does an element change during nuclear decay?
An element can change into a different element altogether
The nucleus breaks apart
100
#7 What is background radiation?
Radiation that occurs naturally in the environment
100
Name one symptom of radiation exposure
skin looking burned, hair loss, nausea, vomiting, cancer, lung scarring, internal bleeding, diarrhea, headache, fever, death, dizziness, trouble walking, disorientation, low blood pressure
100
What is the name of one of the devices that can be used to detect nuclear radiation?
Geiger Counter, film badge
100
This is the nearest place to us where people use the breaking of atoms to generate electricity
Limerick Nuclear Power Plant
200
#8 What is the effect of beta decay on the composition of a nucleus?
A neutron decomposes into a proton and an electron, releases the electron and the proton stays trapped
200
What is the term for the process in which an unstable atomic nucleus emits charged particles?
Radioactivity
200
After an Alpha particle steals 2 electrons from another atom, the alpha particle will become WHAT noble gas?
Helium
200
What noble gas is radioactive, produced by the nuclear decay of uranium, and leaks into houses though tiny holes in foundations?
Radon
200
What two parts of an atom break off and form an Alpha particle?
2 protons, 2 neutrons
300
#6 (1 of 3) Describe the penetrating power of an alpha particle - How far does it travel, what stops it
Travels a few centimeters, stopped by a piece of paper
300
#6 (2 of 3) Describe the penetrating power of an beta particle - How far does it travel, what stops it
Travels about 2 meters, stopped by aluminium
300
True / False - Atoms can be ionized without changes to the way they bond with other atoms/molecules
False. A change in ionization (the charge of an atom) changes how it behaves
300
Not all radiation is harmful, depending on the amount. People detect this type of radiation every day, and is important for humans for it to be in a certain range?
(some people think its best if it is kept between 60 and 80)
Thermal radiation
300
What part of an atom breaks off and creates a Beta particle?
Electron
400
#2 What are the three types of nuclear radiation?
Alpha, Beta, Gamma
400
The term for any atom containing an unstable nucleus
Radioisotope or Radioactive isotope
400
Radiation does not necessarily kill a cell, it sometimes changes the __________ in the cell, which is the instructions for everything in the cell --- and may be passed on to offspring
DNA
400
This organ of the human body is built to detect a very specific type of radiation that measures between 380 nm and 760 nm, smaller than X-Rays and bigger than Microwaves
Eyes (visible light is the radiation)
400
What is the term for the time required for half of the atoms in a sample to decay? Also the name for a video game series
Half-life
500
#3 How are atoms affected by nuclear radiation?
Atoms become ionized
500
#6 (3 of 3) Describe the penetrating power of an alpha particle - How far does it travel, what stops it
Travel infinitely, stopped by lead or 6 ft of concrete
500
Living things have defenses against radiation. Affected cells may be ____ or repaired to prevent long term damage.
Terminated, killed, replaced
500
The Earth's atmosphere is constantly hit with ionizing radiation (called cosmic rays) that comes from outer space . Most of it comes from HERE.
The sun
500
The atomic bomb was the first time that the breaking of atoms was turned into a weapon of mass destruction. Only two bombs were ever used against in war. What were the names of the cities?
Hiroshima and Nagasaki