7th Grade Geologic History and Fossils Review

_____ dating gives you an approximate age based on other layers of rock or fossils.

• absolute dating

• carbon dating

• relative dating

• qualitative

Match the following

• original remains

• fossilized wood where all parts have been replaced with minerals

• petrified remains

• hollow area of sediment in the shape of the organism

• cast

• a copy of the shape of an organism

• trace fossils

• when the environment prevents decay and preserves actual organism; woolly mammoth frozin in ice

• mold

• evidence of animal ativity such as footprints, droppings or burrows

Tags

NGSS.MS-LS4-1

Remains of organisms preserved for millions of years

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Match the following

• Law of superposition

• States that the geologic feature which cuts another is the younger of the two features.

• Law of crosscutting relationships

• States that layers of sediment are originally deposited horizontally under the action of gravity.

• Principle of original horizontality

• Erosional surfaces that can represent a break in the geologic record

• unconformity

• The statement that old rocks are on the bottom layers of undistrubed rock.

Tags

NGSS.MS-ESS1-4

The only type of rock that contains fossils.

• igneous

• sedimentary

• metamorphic

Tags

NGSS.MS-LS4-1

Species that died out and have never been seen or will be seen again ​ (a)  

• extinctions
• half-life
• fossil
• petrified

Tags

NGSS.MS-LS4-1

What can be learned about a fossil using relative-age dating?

• Its age based on radioactive decay

• Its age in years

• Its age compared to other fossils

• All of the above

Tags

NGSS.MS-LS4-1

Match the following

• trace fossil

• youngest rocks are found

• on the bottom

• a carbon drawing of an organism left burned into sedimentary rock

• original remains

• dinosaur tracks

• carbonaceous film

• mosquito in amber

• on the top

• oldest rocks are found

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

The statement that old rocks are on the bottom layers of undistrubed rock

• Principle of original horizontality

• Law of superposition

• Tectonic theory

• Law of cross-cutting relationships

Tags

NGSS.MS-ESS1-4