Steno and the Shark

What did Steno discover about "tongue stones"?

• • They were a type of rock

• • They were fossils of ancient shark teeth

• • They were shells

• • They grew inside rocks

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

In what year did Steno study the great white shark?

• • 1666

• • 1766

• • 1866

• • 1966

Why did Steno believe that tongue stones couldn’t have grown inside rocks?

• • They were made of metal

• • The rocks were too hard

• • The tongue stones fit perfectly inside the rocks without cracks

• • They were found on the ocean surface

What did Steno suggest about the rock around the tongue stones?

• • It was always solid

• • It had been sand or mud that later hardened into rock

• • It formed from volcanic eruptions

• • It was created by human activity

Tags

NGSS.MS-ESS2-1

What type of fossil evidence helped Steno make his discoveries?

• • Plant fossils

• • Fossilized dinosaur bones

• • Fossilized shark teeth

• • Bird fossils

Steno realized that tongue stones were actually _____ teeth.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What did Steno discover about 'tongue stones'?

• They were a type of rock

• They were fossils of ancient shark teeth

• They were shells

• They grew inside rocks

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

In what year did Steno study the great white shark?

• 1666

• 1766

• 1866

• 1966

Why did Steno believe that tongue stones couldn’t have grown inside rocks?

• They were made of metal

• The rocks were too hard

• The tongue stones fit perfectly inside the rocks without cracks

• They were found on the ocean surface

What did Steno suggest about the rock around the tongue stones?

• It was always solid

• It had been sand or mud that later hardened into rock

• It formed from volcanic eruptions

• It was created by human activity

Tags

NGSS.MS-ESS2-1