Experimental Design
It is a variable that stands alone and isn't changed by the other variables you are trying to measure.
What is independent variable?
13.8 billion years
What is the age of our universe?
When wavelengths of light are stretched.
What is a red-shift?
If the universe is expanding, then it was once.....
What is smaller?
This radioactive element can only be used to date prior living things.
What is Carbon-14?
The variable that is affected by other factors.
What is dependent variable?
This law basically says: "The farther away the galaxies, the faster they move away."
What is Hubble's Law?
Wavelengths of light are compressed.
What is blue-shift?
For hydrogen and helium to exist in its current ratios, the universe had to once be...
What is hotter?
Approximately half of these decay into daughter atoms every half-life
What are parent atoms?
Factors that do not change and remain fixed throughout the process.
What are constants?
Process of making the initial Hydrogen and helium in the universe. It no longer occurs.
What is Big Bang nucleosynthesis?
The stretching of wavelength in light as an object moves away is often compared to this sound phenomenon.
What is Doppler Effect?
This scientific law can help explain why Hydrogen can become Helium
What is Law of conservation of matter?
The time it takes for about half of parent atoms to become daughter atoms.
What is Half-Life?
This is a statement showing the relationship between the independent variable and dependent variable.
What is a hypothesis?
This is almost identical to a blackbody spectrum.
What is Cosmic Microwave Background Radiation?
This is the wavelength of light most strongly emitted by our Sun.
What is visible light?
This gentleman is credited with the discovery of of redshifting light of distant galaxies and universe expansion.
Who is Hubble?
Carbon-14 becomes this element.
What is Nitrogen-14?
This is used as a baseline to compare the results of the experiment. It is normally absent the independent variable.
What is the control group?
The stretching of wavelengths tells us this about the universe.
What is expansion?
The "hottest" and shortest wavelengths of light are called this.
What is gamma rays?
It says the universe expanded from a hot, dense singularity.
What is the Big Bang Theory?
The half-life of C-14 is approximately 5700 years. An object has 25% C-14 and 75% N-14. How old is the object?
What is 11,400 years?