Fossils & Geologic Time Scale - Pearson Chapter 8 L 1, 2, 4

What is a fossil?

• The preserved remains or traces of living things

• A really old rock

• Only the traces of living things

• An animal preserved in rock

What is a mold fossil?

• A fossil formed when an organism creates by itself a hollow shape in sediment that looks just like the organism

• A solid copy of the shape of an organism

• A fossil formed when an organism is buried and its remains decay, leaving a hollow area in the sediment

• A fossil formed when a hollow organism is buried and is fossilized

What is a cast fossil?

• A liquid copy of an organism created when water with minerals and sediment fill up a mold

• A solid copy of an organism created when water with minerals and sediment fill up a mold

• A fossil of a dinosaur that broke its bone

• A solid copy of an organism created when sediment hardens inside of a cast

What is a petrified fossil?

• A fossil that is formed when an organism spontaneously turns into stone

• A fossil that is formed when an organism is petrified

• A fossil in which some or all of an organism's minerals is replaced with organic material

• A fossil in which some or all of an organism's organic material is replaced with minerals

What is a carbon film fossil?

• A fossil made when gases escape from sediment, covering an organism with a thin layer of carbon

• A fossil made when carbon escapes from sediment, covering an organism with a thin layer of gases

• A fossil made when an organism watches a film about carbon

• A fossil made when an organism is covered with a thick layer of carbon

What are trace fossils?

• Fossils that show evidence of the dancing an organism did

• Fossils that show evidence of the activity of organisms.

• Natural tracings of original fossils

• Bits of evidence left behind by organisms

What are preserved remains?

• When an organism is trapped in tar, amber, or ice, and ALL organic material is preserved

• When an organism is trapped in a sticky material and SOME organic material is preserved

• When remains are preserved

• When an organism escapes from tar, amber, or ice, and ALL organic material is preserved

Who is a paleontologist?

• A scientist who studies rocks

• A scientist who studies dinosaurs

• A scientist who studies fossils

• A scientist who studies plants

What can fossils show about Earth's past?

• How living things changed over time (evolution)

• How climate changes in a location

• Nothing about Earth's past

• How continental drift occurred

• What organisms lived in the past but not today (extinction)

What is the fossil record?

• Part of the knowledge gathered from fossils and what fossils show about ancient life on Earth

• The combined knowledge gathered from fossils and what fossils show about modern life on Earth

• The combined knowledge gathered from footprints and what footprints show about ancient life on Earth

• The combined knowledge scientists have gathered from fossils and what fossils show about ancient life on Earth