Planet Earth and Beyond: Fossils in Rock NATURAL SCIENCES GRADE
5
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Fossils in Rock NATURAL SCIENCES GRADE 5
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Fossils are the remains of ancient plants and animals preserved
(kept safe) in layers of rock During fossilisation, the soft parts
of the plants and animals rot away NATURAL SCIENCES GRADE 5
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Only the hard parts remain and become preserved as fossils Most
of the organisms that scientists study are now extinct (they do not
exist anymore) NATURAL SCIENCES GRADE 5
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Lets watch a video http://www.youtube.com/watch?v=SEDfRy6DQns
http://www.youtube.com/watch?v=SEDfRy6DQns NATURAL SCIENCES GRADE
5
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1. When a plant / animal dies, it falls to the ground This
TRICERATOPS died on the banks of a river NATURAL SCIENCES GRADE
5
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2. The flesh of the dinosaur decomposes, or other animals eat
it. Only the skeleton remains. NATURAL SCIENCES GRADE 5
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3. There was a lot of rain, so the river rose and covered the
skeleton with mud and sand NATURAL SCIENCES GRADE 5
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4. Over time, more sand and mud layers are formed on top of the
skeleton. The layers become hard and turn to rock. NATURAL SCIENCES
GRADE 5
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5. Wind and water erodes the rock over time and the fossils are
exposed on the surface. A scientist can now carefully remove the
rock and sand around the skeleton and study the fossil in a safe
place. NATURAL SCIENCES GRADE 5
Nobody was around millions of years ago We have to find other
ways to find out what life was like millions of years ago Fossils
give us information about the past NATURAL SCIENCES GRADE 5
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Fossilized animal droppings tell us what the animal used to eat
We can then work out what plants grew in that time NATURAL SCIENCES
GRADE 5