What is old?

What is old for you?

Open Ended

what is old for you?

fossil

Multiple Choice

what is a fossil?

• are living plants and animals

• are living animals

• are the remains or traces of plants and animals that lived long ago

Where do they come from?

Multiple Choice

where do the fossils come from?

• Fossils are found in air

• fossils are found in earth that once lay underwater

Some of the oldest fossils are those of ancient algae that lived in the ocean more than 3 billion years ago. The word fossil comes from the Latin word fossus, meaning "having been dug up." 

How do they form?

Multiple Choice

How do they form?

• when an animal or plant are killed

• when a plant or animal dies in a watery environment and is buried in mud and silt

they are formed...

After an animal dies, the soft parts of its body decompose leaving the hard parts, like the skeleton, behind. This becomes buried by small particles of rock called sediment.

As more layers of sediment build up on top, the sediment around the skeleton begins to compact and turn to rock.

Multiple Choice

what is the science that studies fossils?

• paleontology

• architecture

Multiple Choice

why do we need to study fossils?

• Because they helps us to learn about when and how different species lived millions of years ago

• Because it helps museums to sell many tickets

Types of fossil

Molds

A mold fossil is a fossilized imprint made in the substrate. The substrate is the rock or sediment on which a fossil makes its mark

Cast

Same as mold however Cast fossils also include skin, leaves, teeth, class. they are subsequently filled in with minerals that later harden for form solid rock

Traces

Trace fossils, also called ichnofossils, do not contain information about the organism itself. Rather, they contain information on traces left by the organism

Multiple Choice

what is this fossil?

• Mold

• Trace

Multiple Choice

what is this fossil?

• Mold

• Trace

Multiple Choice

what is this fossil?

• trace

• cast

Multiple Choice

what is this fossil?

• carbon film

• trace

• cast