Planet Earth: Topic 8 - Fossils
Answers
1. The preserved remains (even the soft parts) of a plant or animal can likely be found in ...
amber
(Text p. 418) Amber is hardened resin (tree sap) which preserves the entire organism.
x sediment
x gemstones
x Burgess Shale
2. Trilobites are one of the most famous groups of fossils. They are now extinct. They lived in ...
x Gobi Desert
x Antarctic Tundra
x Fresh water lakes
Warm ocean water
(Text p. 418) Figure 5.74 They lived in warm ocean water and are now extinct.
3.
Bambiraptor fossils were discovered by a 14 year-old by in Glacier National park, Montana. This
was an important discovery, because it provides evidence that dinosaurs ...
x were warm blooded
x became extinct as a result of a comet
were related to birds
(Text p. 419) Did You Know? This discovery provided evidence of a link between birds and
dinosaurs.
x were attentive parents
4.
When an organism is burried under many layers of sediment, pressure and heat build up, leaving a
thin film of carbon residue on the rock surfaces. This residue forms an outline of the organism and
is called ...
x petrified residue
carbonaceous film
(Text p. 418) The outline is called a carbonaceous film
x carbon-dated remains
x trace fossil residue
5.
When an organism falls into soft sediment, like mud, its hard parts dissolve leaving a cavity in the
rock called a ...
x trace layer
x cast
