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Open Court Unit Four Review

Vocabulary

Question: If something has disappeared it has
Answer: Gone away

Question: Something that is giant is
Answer: Big

Question: Something that has warmth has...
Answer: Heat

Question: Something pointy is said to be
Answer: Sharp

Question: If you are shaking, or moving it around someone may say that you are...
Answer: Wiggling

Words Scientists Use

Question: A glass-like fossil made from the sap of very old trees
Answer: Amber

Question: A black mineral from the earth that can be burned for fuel
Answer: Coal

Question: The act of seeing or finding out something for the first time
Answer: Discovery

Question: No longer alive
Answer: Extinct

Question: The hardened remains or traces of an animal or plant that lived log ago
Answer: Fossil

Fossil Knowledge

Question: Something that scientists learn by studying fossils
Answer: What lived long ago

Question: This is the reason that scientists can't get a good picture of what dinosaurs were really like
Answer: Soft parts of the body rot away.

Question: This traps the animal and turns to stone
Answer: Amber

Question: This is the process for which animals turn into fossils
Answer: 1. The animal dies
2. It's body is covered with sand and mud.
3. It's body hardens into stone.

Question: A tool a scientist may use to examine small parts or pieces of an animal
Answer: Microscope

Fossils Tell of Long Ago

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Why did the Dinosaurs Disappear?

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