Unit 9 - Ch 9 CKLA (8 pts)

Front

What are muscle attachment ridges?

Back

Muscle attachment ridges are bumpy areas on bones where muscles attach. They help scientists identify the type of dinosaur based on how strong the muscles were.

Front

What happens during a chemical change?

Back

During a chemical change, elements rearrange to form a new substance, which has different properties from the original.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a living organism from the past, often found in sedimentary rock.

Front

Why are dinosaur fossils important to scientists?

Back

Dinosaur fossils help scientists understand what Earth was like in the past, including the environment and the types of organisms that lived.

Front

What tools are commonly used to excavate fossils?

Back

Common tools for excavating fossils include a rock hammer and chisel, which help carefully remove rock around the fossils.

Front

What is the significance of discovering a new species of dinosaur?

Back

Discovering a new species of dinosaur can provide insights into the diversity of life on Earth and how species evolved over time.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of a new substance.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron when it reacts with oxygen and moisture.

Front

What role do paleontologists play in studying fossils?

Back

Paleontologists are scientists who study fossils to learn about ancient life and the history of Earth.

Front

How do scientists determine the age of fossils?

Back

Scientists determine the age of fossils using methods like radiometric dating and stratigraphy, which analyze the layers of rock.