Warm Up, September 28th, 2015 Sunbird Part 8

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Warm Up, September 28th, 2015 Sunbird Part 8 Perched on the tendril of a Passiflora plant, the egg of the Julia heliconian butterfly may be safe from hungry ants. This species lays its eggs almost exclusively on this plant's twisted vines.

Radioactive Dating Worksheet Review Perched on the tendril of a Passiflora plant, the egg of the Julia heliconian butterfly may be safe from hungry ants. This species lays its eggs almost exclusively on this plant's twisted vines.

Lab on Radioactive Dating Radioactive Dating Lab Lab on Radioactive Dating

Fossils

Original Remains

Ice

Tar

Amber

Traces or remains of living things from long ago. Fossils* Traces or remains of living things from long ago. Original Remains* Fossils that are the actual bodies or body parts of organisms. Can be found in ice, tar, and amber.

Mold* Cast* - A mold is when a visible shape of a plant or animal was left in a sedimentary rock. - A cast is when a mold is filled in to produce a solid model in the shape of the mold.

- The stone fossil of a tree. Petrified Wood* - The stone fossil of a tree.

- When a dead plant or decaying animal leaves behind its carbon. Carbon Films* - When a dead plant or decaying animal leaves behind its carbon.

Trace Fossils* - Evidence of an animals presence in a given location (waste, footprints, bite marks)

Ice Core* - A tubular sample that shows the layers of snow and ice that have built up over thousands of years.

- All living things have a certain amount of Carbon 14 in them. Carbon 14 Dating* - All living things have a certain amount of Carbon 14 in them. - Carbon 14 has a half-life of 5,700 years. So in 5,700 years you have half the Carbon 14 you initially had.

Bean Lab – Half Life Take your beans and count them out to get 100. Place all 100 black side up in your tub. Lightly bring your tub up and down ONCE as demonstrated. Remove all white beans, place into cup. Count black beans left. Record your results. Repeat steps 4-6 until there are less than 3 black beans. Graph your data.

Group Graph Black Beans # 100 90 80 70 60 50 40 30 20 10 Flip # 1 2 3

Extra Time – Avg Graph Black Beans # 100 90 80 70 60 50 40 30 20 10 Flip # 1 2 3 4 5 6 7 8 9