Dinosaur Ghosts

What Really HappenedTheme 2, Selection 3, Day 1

Created By: Mr. Williams

Erosion

Theory

Excavation

Extinct

Specimens

Geologists

Hypotheses

paleontologists

• erosion– All the natural processes that

wear away earth and rock

• theory– A widely held scientific explanation

that is based on evidence but cannot be stated as fact.

• excavation– The process of finding something

by digging for it

• extinct– No longer living; having all died

out

• specimens– Samples taken for scientific study

• geologists– Scientists who study rocks and

the earth’s crust

• hypotheses– And educated or scientific guess

based on what we know so far

• paleontologists– A scientist who studies prehistoric

life

Key Background Vocabulary

Dinosaur Ghosts

What Really HappenedTheme 2, Selection 3, Day 2

Created By: Mr. Williams

The ________ of the hillside was caused by heavy rains and wind.

erosion

In the 1860s, Joseph Lister published his ______ that unseen germs cause infections. theory

A later ___________ of the site turned up more fossils.

excavation

The passenger pigeon became ________ at the beginning of the twentieth century.

extinct

The ___________of pond water were full of tiny creatures.

specimens

Rocks can tell __________ a lot about how the earth changed in a particular place.

geologists

Ideas remain _____________ until evidence proves that they are true.

hypothesis

A ______________ compares the bones of dinosaurs to those of modern animals. paleontologist

• erosion– All the natural processes that

wear away earth and rock

• theory– A widely held scientific explanation

that is based on evidence but cannot be stated as fact.

• excavation– The process of finding something

by digging for it

• extinct– No longer living; having all died

out

• specimens– Samples taken for scientific study

• geologists– Scientists who study rocks and

the earth’s crust

• hypotheses– And educated or scientific guess

based on what we know so far

• paleontologists– A scientist who studies prehistoric

life

Key Background Vocabulary

Dinosaur Ghosts

What Really HappenedTheme 2, Selection 3, Day 3

Created By: Mr. Williams

The erosion of the beach caused…

The scientist’s theory was that…

The excavation uncovered...

Many extinct creatures…

The specimens in the lab…

Geologists study…

My hypothesis is that…

A paleontologist studies…

• erosion– All the natural processes that

wear away earth and rock

• theory– A widely held scientific explanation

that is based on evidence but cannot be stated as fact.

• excavation– The process of finding something

by digging for it

• extinct– No longer living; having all died

out

• specimens– Samples taken for scientific study

• geologists– Scientists who study rocks and

the earth’s crust

• hypotheses– And educated or scientific guess

based on what we know so far

• paleontologists– A scientist who studies prehistoric

life

Key Background Vocabulary

Dinosaur Ghosts

What Really HappenedTheme 2, Selection 3, Day 4

Created By: Mr. Williams

• erosion– All the natural processes that

wear away earth and rock

• theory– A widely held scientific explanation

that is based on evidence but cannot be stated as fact.

• excavation– The process of finding something

by digging for it

• extinct– No longer living; having all died

out

• specimens– Samples taken for scientific study

• geologists– Scientists who study rocks and

the earth’s crust

• hypotheses– And educated or scientific guess

based on what we know so far

• paleontologists– A scientist who studies prehistoric

life

Key Background Vocabulary