# Radioactive Dating Computer Lab Assignment

## Presentation on theme: "Radioactive Dating Computer Lab Assignment"— Presentation transcript:

Relative Dating Quiz Relative Dating Quiz Screenshot your final score here 13 Points

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Click Me What is Radioactivity 20 Points Turn to page 347 Don’t Know
I know Think I know Would like to know Scan pages Identify the vocab and place them in the categories to the right Screenshot when you get 5/5 on the quiz Click Me Click here for quia game. Screenshot results over this box.

Click Me 9 points Watch the movie above and click on the link below. Screenshot your answers over this box.

What is Half Life? 6 Points Click Me A. Half Life
Click the “Pause” button at the bottom of the window. Click the “Add 10” button below the “Bucket o’ Atoms” repeatedly, until there are no more atoms left in the bucket. Predict how many of your 100 carbon 14 atoms are going to be left in the bucket after 5700 years The half life for Carbon-14 is 5700 years Prediction_____ Click play Hit Pause when the graph at top gets to the red line… screenshot that graph here with the pie chart….. Was your prediction accurate: YES or NO DESCRIBE WHAT HALF LIFE IS IN YOUR OWN WORDS HERE What percentage of carbon is left after 1 half life

Decay Rates 8 Points Click Me
A. Decay Rates Click the “Decay Rates” tab at the top of the screen. On the right side of the screen, click the button next to Uraniam This time we will watch the decay of this atom. Uranium-238 has a half-life of about 4.5 billion years. On the bucket of atoms, there is a slider. Drag the slider all the way to the right and watch the graph at the bottom of the screen. After three half-lives (13.5 billion years), what percent of the original uranium remains? After one half-life (4.5 billion years), what percent of the original uranium remains? Percent here Percent Here Screenshot of graph at one half life Screenshot of graph at 2 half-lives After four half-lives (18 billion years), what percent of the original uranium would remain? After two half-lives (9 billion years), what percent of the original uranium remains? Percent Here Percent Here Screenshot of graph at 3 half-lives Screenshot of graph at 4 half-lives