Fossil Formation and Types

Susan and Josh introduce fossils, explaining their formation in sedimentary rocks. They showcase various fossil examples, including trilobites, cephalopods, and shark teeth. The video details how fish fossils form through sedimentation and compaction over time. It also covers how scientists determine the age of fossils. Viewers are encouraged to explore further resources for more information on fossils.

What type of rock is most commonly associated with the formation of fossils?

• Volcanic rock

• Sedimentary rock

• Metamorphic rock

• Igneous rock

What is a common feature of sedimentary rocks?

• They are the hardest type of rock

• They are formed from lava

• They have visible layers

• They are always found underwater

Which of the following is an example of a fossilized cephalopod?

• Ammonite

• Nautilus

• Trilobite

• Shark's tooth

What is the significance of finding a trilobite fossil?

• It proves the existence of dinosaurs

• It suggests recent geological changes

• It indicates volcanic activity

• It shows evidence of ancient marine life

Which of the following is NOT a fossil mentioned in the video?

• Shark's tooth

• Trilobite

• Dinosaur bone

• Cephalopod

What is the first step in the formation of a fish fossil?

• The fish floats on the water surface

• The fish is fossilized immediately

• The fish is buried by sediment

• The fish is eaten by predators

What happens to the sediment layers over time during fossil formation?

• They dissolve

• They compact and harden

• They remain unchanged

• They float away

What happens to the ocean in the process of fossil formation?

• It expands

• It dries up

• It becomes saltier

• It freezes

How can scientists determine the age of fossils?

• By analyzing the layers of sedimentary rock

• By examining the color of the rock

• By the location where the fossil was found

• By measuring the size of the fossil