Presentation on theme: "Jeopardy Vocabulary Rock Layers FossilsGeologic Time Random Facts Metric System 100 200 300 400 500 Final Jeopardy."— Presentation transcript:
Jeopardy Vocabulary Rock Layers FossilsGeologic Time Random Facts Metric System 100 200 300 400 500 Final Jeopardy
Vocabulary 100 A fossil of a dinosaur’s footprint is an example of this. What is a trace fossil?
Vocabulary 200 A fossil that is the actual body or body parts of an organism. What are original remains?
Vocabulary 300 The age of an event or object in relation to other events or objects. What is relative age?
Vocabulary 400 The actual age in years of an event or object. What is absolute age?
Vocabulary 500 A fossil of an organism that was common, lived in many areas, and existed only during a certain span of time. What is an index fossil?
Rock Layers 100 Why these rock layers are younger than the intrusion layer. (click on the picture and use the diagram) What are layers 5 and 6 are sedimentary rock layers that formed after the igneous rock penetrated the layers? You can tell because they are on top of the intrusion.
Rock Layers 200 Why these rock layers are older than rock layer 1. (click on the picture and use the diagram) What is 1 is an igneous intrusion that cut through layers 4, 3, and 2 after they were formed.
Rock Layers 300 Fossil B was most likely formed during this time span. (click on the picture and use the diagram) What is between 206 and 144 million years ago?
Rock Layers 400 The reason that there are no fossils in rock layer 1. (click on the picture and use the diagram) What is igneous rock that forms when molten rock solidifies. This molten rock destroys any trace of life with which it comes in contact. ?
Rock Layers 500 What you can tell about the age of fossil C. (click on the picture and use the diagram) What is, it is less than 144 million years old?
Fossils 100 The reason igneous rocks don’t contain fossils. What is the high temperature of the molten rock from which igneous rock forms destroys any trace of plants or animals?
Fossils 200 These are what the earliest fossils are of. What are one-celled organisms?
Fossils 300 Original remains of a small insect may be preserved in this. What is amber?
Fossils 400 The reason that many fossils only preserve traces of the hard parts of an organism. What is soft parts often decay very quickly?
Fossils 500 This is what the width of rings in a tree cross-section indicate. What is how much the tree grew that year?
Geologic Time●● 100 The number of years that the first evidence of life on earth can be traced back to. What is 3.8 billion years ago?
Geologic Time●● 200 (click on the blue dot and use the geologic time scale) The Silurian period take place during this era. The Silurian period occurred between 443 and 417 million years ago. What is the Paleozoic era?
Geologic Time●● (click on the blue dot and use the geologic time scale) 300 Dinosaurs existed during this era between 195 and 65 million years ago. What is Mesozoic era?
Geologic Time●● 400 (click on the blue dot and use the geologic time scale) The four divisions of the geologic time scale are based on this. What is the divisions of the geologic time scale mark significant changes in Earth's history.
Geologic Time ●● 500 The way scientists infer that Earth is more than 4 billion years old and is constantly changing and the theory that this evidence supports. What is by studying rocks and fossils and the theory of Uniformitarianism?
Random facts. 100 What magma becomes when it cools. What is solid rock?
Random Facts 200 What Precambrian time refers to. What is the earliest period in Earth's history?
Random Facts 300 The smallest unit of geologic time. What is an epoch?
Random Facts 400 The force that keeps us on the Earth. What is gravity?
Random Facts 500 How the rate of the breakdown of radioactive material is measured. What are half-lives?
Metric system 100 The number of centimeters in one meter. What is 100 cm?
Metric system 200 Meters in one kilometer. What is 1,000 m?
Metric system 300 Millimeters in one centimeter. How much is 10 mm?
Metric system 400 The number of centimeters to measure out 365 years where 1mm = 1 year. What is 36.5 cm?
Metric system 500 Miles in a 10k road race What is 6.2?
Final Jeopardy Radioactive dating is a useful tool to determine the absolute age of igneous rocks. It is not useful, however, for determining the absolute age of sedimentary rocks. Briefly describe how radioactive dating works. Then explain why it is useful for determining the age of igneous rocks, but not sedimentary rocks. In your answer, use the terms radioactive, absolute age, igneous rock, and sedimentary rock
Sample: Some atoms exist in unstable forms. Over time, these unstable forms break down into other forms. This breakdown is called radioactivity. Radioactive materials always break down at the same rate. Therefore, by determining how much of a radioactive material has broken down, scientists can determine how old, in years, a given sample is. This number of years is the absolute age of that sample. Radioactive dating is very useful for determining the age of a sample of igneous rock. Radioactive dating is not, however, useful for determining the absolute age of sedimentary rock. Sedimentary rocks are a combination of materials that once belonged to other rocks. Using radioactive dating on sedimentary rock will determine only the date that the original rock was formed.