Relative Dating
A rock that acts as the starting material for the formation of another rock is called__________.
A. Parent Material
B. Daughter Material
C. Sediments
A. Parent Material
Radiometric dating is helpful in determining the ________ of a rock layer
A. Exact Age
B. Approximate composition
C. Approximate Age
A. Exact Age
Energy is defined as_____________.
A. The ability to do work
B. A subatomic particle
C. Matter
A. The ability to do work
I have 100 grams of a radioactive isotope. It has a half life of 4 days. How much material will remain in 4 days?
I went through 1 half life, meaning I cut my parent material in half a single time.
100/2= 50 grams
Relative Age dating is helpful in determining the ___________ of a rock layer
A. Exact age
B Approximate composition
C. Exact composition
D. Approximate Age
D. Approximate Age
A half-life is____________
A. how long it takes for an organism to decay half-way
B. How long it takes for nuclear energy to be made
C. How long it takes for half of the nuclei of a parent material to decay into daughter material
C. How long it takes for half of the nuclei of parent material to decay into daughter material
A resource that cannot be depleted is called a__________.
A. Clean
B. Renewable
C. Nonrenewable
B. Renewable
Refer to the picture at the front of the class. What law or principle tells you that A is older than C?
The Law of Superposition.
What law or principle tells us that undisturbed rock layers beneath other layers will be older than the layers above them?
Law of Superposition
An isotope is_______.
A. An atom with an abnormal number of Electrons
B. An atom with an abnormal number of Protons
C. An atom with an abnormal number of Neutrons
C. An isotope is an atom with an abnormal number of neutrons
Which of the following is not a renewable energy resource?
A. Hydroelectric
B. Geothermal
C. Nuclear
D. Wind
C. Nuclear
Refer to the picture at the front of the class. What law or principle tells you that L is younger than G?
Law of Cross-Cutting Relationships
What law or principle tells us that, when undisturbed, rock layers tend to be deposited horizontally?
The Law of Original Horizontality
If 100 grams of Carbon 14 decays until only 25 grams remains after 11,460 years in total, then what is the half-life of carbon 14?
How many times do cut my parent material in half to turn 100 into 25?
100/2=50 50/2=25 so I went through 2 half-lives in 11,460 years
I want to find what one equals, so 11,460/2= 5,730 years is one half life
A turbine is used to__________.
A. Turn rotational energy into electrical energy.
B. Turn electrical energy into rotational energy.
C. Turn chemical energy into electrical energy.
A. Turn rotational energy into electrical energy.
Refer to the Picture at the front of the class. What feature is shown at S?
Unconformity.
What Principle would tell us if a layer of rock cuts through another layer, then the layer that is cutting through must be younger than the layer being cut through.
Cross-cutting Relationships
Gold-198 has a half-life of 2.7 days. How much of a 96 g sample of gold will be left after 8.1 days?
I know 1 half life is 2.7 days and that 8.1 total days have gone by. so 81/27=3 half lives. So i need to cut my parent material (what I'm starting with) in half 3 separate times. 96/2=48 48/2=24 24/2=12
12 grams will be left
Which option best describes a combustion reaction:
A. A fuel source reacts with oxygen to release heat, light, and sound.
B. A fuel source reacts with carbon dioxide to release heat, light, and sound.
C. A fuel source reacts with oxygen to create nuclear energy.
D. A fuel source reacts with carbon dioxide to create nuclear energy.
A. A fuel source reacts with oxygen to release heat, light, and sound.
If the Half-life of Iodine-131 is 8.1 days, approximately how long will it take a 50 gram sample to decay to 6.25 grams?
How many half lives do I go through in order to turn 50 into 6.25?
50/2=25 25/2=12.5 12.5/2= 6.25 So I cut my parent material in half 3 times. If I want to find the total time and 1 half life is 8.1 days, I do 8.1X3 half lives and get 24.3 days.