Big Ideas
Think Like a Scientist
Main Ideas
Big Ideas, 2
Main Ideas, 2
100

A group of living things of the same kind is called a(n) _________________. 

What is...

species 

100

Brown beetles living on brown leaves have adapted to their environment by changing their color to match the color of their environment. This adaptation helps them to _________________________. 

What is...

survive and reproduce. 

100

The male lion is adapted to live and hunt in a grassland environment. Which is a body part of the lion that is adapted for survival in this environment? 


What is...

the color of its fur

100

If an organism moves to a new environment, it ______________________________. 

What is...

has to find one similar to its old environment. 

100

Which of the following is an example of a trace fossil? 

A. an insect

B. a tooth 

C. a shell

D. a footprint

What is...

D. a footprint

200

The Kudzu vine comes to the United States from Asia. It grows faster than other plants and crowds out local plant species. In this example, the Kudzu vine is a(n)  ____________________. 

What is...

invasive species 

200

The environment of a lion changes. What can the lion change to help it survive? 

What is...

It can change it's behavior. 

200

________________ is an example of a behavior that an animal can have. 

A. Hunting in groups

B. A long tail 

C. Fur with sports

D. An animal's fur color

What is...

A. Hunting in groups

200

The Apatosaurus is an extinct species. This means that _____________________. 

What is...

there are no living members of this species. 

200

A cast fossil is a _______________. 

What is...

copy of an organism made from rock. 

300

Which of these is an example of a slow change in an environment? 

A. An earthquake makes a shift in the ground. 

B. A river carries away rock to form a canyon.

C. A landslide shakes soil and rock loose. 

D. A wildfire kills many trees in a forest. 

What is...

B. A river carries away rock to form a canyon.

300

When humans cut down trees in the rainforest, the amount of light that reaches the rainforest floor increases. How could this affect the rainforest? 

What is...

Some plants will not be able to survive with more sunlight. 

300

A(n) _________________ is something that helps an organism survive. 

What is. 

adaptation

300

By studying dinosaur fossils, scientists can figure out _______________________. 

A. behavior of dinosaurs. 

B. color of dinosaurs. 

C. smell of dinosaurs. 

D. All of the above. 

What is...

A. behavior of dinosaurs.


300

A mold fossil is created when __________________. 

What is...

part of a dead organism falls into the mud. 

400

________________ is an example of a very fast environmental change.

A. Rocks wearing away

B. An earthquake 

C. Resource removal 

D. An invasive species 

What is...

B. An earthquake 

400

Investigation: 

Mt. St. Helens is a volcano in the state of Washington. On May 18, 1980, the volcano erupted. Scientists wanted to know how the eruption affected organisms there. Here is some of their data. 

Toutle River right after Mt. St. Helens erupted: 

- Trees blown down

- Ash and mud buried part of river

- Some gophers and mice that lived underground still alive

- Some insects and spiders still alive on the ground 

- Small plants under snow still alive

Toutle River and Mt. St. Helens 30 Years after 

- Trees regrowing

- Some ash and mud still in river

- Large mammals and birds now in area

- Many types of insects and small animals found

- Many different types of trees and plants now growing

Look at the data table. Which claim about right after the volcano erupted is supported by the evidence? 

A. Most plants were able to survive the eruption. 

B. Small animals were able to survive better than large animals.

C. The river protected most of the animals that lived there. 

D. Large trees were protected by their strong roots. 

What is...

B. Small animals were able to survive better than large animals.

400

To reproduce is to ______________________. 

What is...

make more of the same organism. 

400

When an insect gets stuck inside of resin that hardens into amber, it becomes a ___________ fossil. 

What is...

whole body 

400

A scientist found a fish fossil on a mountaintop. How did it most likely get there? 


What is...

A ocean environment changed into dry land over time. 

500

What is a behavior? 

What is...

An action that an organism does. 

500

Investigation: 

Mt. St. Helens is a volcano in the state of Washington. On May 18, 1980, the volcano erupted. Scientists wanted to know how the eruption affected organisms there. Here is some of their data. 

Toutle River right after Mt. St. Helens erupted: 

- Trees blown down

- Ash and mud buried part of river

- Some gophers and mice that lived underground still alive

- Some insects and spiders still alive on the ground 

- Small plants under snow still alive

Toutle River and Mt. St. Helens 30 Years after 

- Trees regrowing

- Some ash and mud still in river

- Large mammals and birds now in area

- Many types of insects and small animals found

- Many different types of trees and plants now growing

Compare the information in the left and right sides of the table. Which claim best explains those differences? 

A. Because natural resources were destroyed, few species can now live there. 

B. Because the eruption killed all organisms, new species moved in. 

C. As an environment changes, different species survive well there.

D. Because natural resources were destroyed, few species can now live there. 

What is...

C. As an environment changes, different species survive well there.

500

__________________ is an example of an adaptation that helps an animal survive. 

A. A beetle blending in with a leaf. 

B. a chameleon changing the color of its skin. 

C. A desert rat digging holes to hide during the day

D. All of the above. 

What is...

D. All of the above. 

500

What part of an organism is most likely to become a fossil? 

A. fur

B. skin

C. tooth

D. leaf

What is...

C. tooth

500

What have some scientists inferred from fossils about how dinosaurs suddenly went extinct? 

*2 answers must be given! 

What is...

A huge rock from space crashed into Earth. 

A huge volcano erupted 

Bonus: 

The dinosaurs became poorly adapted to their environment. 

Click to zoom