4.e
What is carbon dating?
A method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.
What is radioactive decay?
the emission of energy in the form of ionizing radiation
What are the two main types of nuclear reactions
Fission and Fusion
What is carbon dating
the use of carbon 14 to estimate the age of a once living thing
How does carbon dating work?
living organisms- like trees,plants,people, and animals- absorbs carbon-14 into their tissue. When they die, the carbon-14 starts to change into other atoms over time.
What particles are emitted in alpha decay?
an alpha particle which is a helium-4 nucleus, consisting of two protons and two neutrons
What is nuclear fission
the process of a heavy atom splitting into two lighter atoms
Which of the following is an alternative method for dating objects that are older than 50,000 years
Uranium Lead dating
Explain how carbon dating is used to determine the age of an object.
By measuring how much carbon-12 and carbon-14 are in a sample, the date of death can be known.
Describe the changes in atomic number and mass number in beta decay.
it increases by 1 but the mass number remains the same
Describe the applications of nuclear fission, including its use in generating electricity and nuclear weapons
It creates energy and is used in bombs
What is radioactive decay
the breakdown of unstable nuclei that realeses energy
Compare and contrast the different types of radioactive decay (alpha, beta, gamma).
Alpha- Particles carry a + charge
Beta- Particles carry a - charge
Gamma- stays neutral
What is the difference between alpha decay and beta decay?
alpha decay releases a helium nucleus
beta decay releases an electron
Explain the process of nuclear fusion, including the conditions required for fusion to occur and the energy released
Heat and Pressure combines two lighter atoms into on heavy atom, it realest a huge amount of energy
What are radioactive materials used for in energy production
to produce steam
Evaluate the strengths and weaknesses of carbon dating as a method for determining the age of objects.
it can only go up to 50,000 years ago.
Predict the type of decay that would occur for a given radioactive isotope.
isotope neutron to a proton ratio.
What is nuclear fusion
the combining of two light atoms into a heavy atom
How are greenhouse gas emissions of nuclear power plants and fossil fuel power plants different
Nuclear power plants release no green house gasses