Scientists find dinosaur fossils in the bottom rock layers of a cliff and mammal fossils in the middle rock layer of the cliff. Which could best be concluded from this evidence?

• dinosaurs ate plants

• dinosaurs were eaten by the mammals

• dinosaurs lived on Earth before the mammals

• dinosaurs and mammals lived at the same time

Tags

NGSS.MS-LS4-1

How does the scientist know about different types of plants that lived long ago?

• she takes photos of fossils and saves them

• she listens to the stories people tell about fossils

• she finds fossils and makes inferences about them

• shse studies fossils because all of the organisms are still alive

Tags

NGSS.MS-LS4-1

Scientists observe rock layers to determine the age of the rocks and what order they formed in. What else can a scientist learn from observing rock layers? Select 2 of the best answers

• how the environment changed overtime

• when people lived

• where people built homes

• what animals lived in the environments

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-LS4-1

If the top layer was "X", the middle layer was "Y", and the bottom layer was "Z"; which layer is the newest (youngest)?

• layer "Y"

• layer "X"

• layer "Z"

Tags

NGSS.MS-ESS1-4

If a scientist was searching for fossils on a mountain and discovered a fish fossil, what could they learn about the past environment?

• it was a forest environment

• it was a body of water environment

• it was a mountain environment

• it was a desert environment

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS4-1

If there were two different types of sedimentary rock, would they form in the same rock layer?

• Yes

• No

How does a fossil form?

• Geologists forming observations

• When an organism dies and is covered with sediment that turns into rock

• Rock layer becomes thicker

• Organisms live in the rock

What does different sedimentary rock layers in a place mean?

• That the environment in that place has changed

• Different organisms live there

• When an organism dies

• Geologists make observations

Tags

NGSS.MS-ESS1-4

What are two things you need to make an inference?

• past knowledge (what you already know)

• model

• observations

• argument

Tags

NGSS.MS-PS1-2

How does a sedimentary rock form?

• Organisms die there

• When sediment sinks and builds up in water, compacts under more sediment and cements over time

• Animals dig up sediment

Tags

NGSS.MS-ESS2-1