earth’s age + evidence. warm up 1)ch 2a diagnostic test 2) section quiz: 2.2a
TRANSCRIPT
![Page 1: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/1.jpg)
Earth’s Age + Evidence
![Page 2: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/2.jpg)
WARM UP1) Ch 2A Diagnostic Test
2) Section Quiz: 2.2A
![Page 3: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/3.jpg)
Notes Tips and Tricks
• Anything in yellow PLEASE write down on your notesheet
• Pictures and diagrams are great things to also draw to help you remember vocab and ideas!
• Underline or bold words that are underlined or bold in PowerPoint BECAUSE THEY ARE IMPORTANT!
![Page 4: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/4.jpg)
How old is the Earth?
Earth is around 4.6 BILLION years old.
![Page 5: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/5.jpg)
BIG QUESTION:
HOW DO WE KNOW HOW OLD THE
EARTH IS?
![Page 6: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/6.jpg)
BIG ANSWER:
Everything coming up provides an
answer to the BIG QUESTION!
![Page 7: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/7.jpg)
Law of Superposition
• Law of Superposition– •Under normal conditions, the layers of sediment get older the deeper you get
![Page 8: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/8.jpg)
Law of Superposition
• Just like a layered cake…you put the bottom layer down first,
so it is the “oldest” and
you fill in each layer on
top of it!
![Page 9: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/9.jpg)
Law of Superposition
• OR the laundry you put in the laundry basket every day!
• Monday’s clothes are the
“oldest” and each day gets
put on top of that!• Draw a laundry basket with
clothes to illustrate the concept!
![Page 10: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/10.jpg)
We Have a Problem…
• 2 things can mess up the
Law of Superposition:
1 – intrusion
2 – unconformity
![Page 11: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/11.jpg)
Intrusion
• A intrusion is younger than any other rock layer it cuts through.
intrusion
![Page 12: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/12.jpg)
Unconformity• Unconformity-
•A break or an irregularity in the geologic time sequence
•A time when no sediment was preserved because it eroded away before it was covered by more sediment OR the ground shifted.
![Page 13: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/13.jpg)
Unconformity
![Page 14: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/14.jpg)
Unconformity
![Page 15: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/15.jpg)
Law of Superposition Practice
![Page 16: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/16.jpg)
Law of Superposition Practice
• This shows the
Law of Superposition,
but what else does it
show?
![Page 17: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/17.jpg)
NEXT……
![Page 18: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/18.jpg)
What is This?
![Page 19: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/19.jpg)
Fossils• Fossil – traces or remains of living
things from long ago
• Index Fossils – fossils that are used as a “reference” to date other fossils
• EX: 8th Gr SC Book
![Page 20: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/20.jpg)
Index Fossil Practice
![Page 21: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/21.jpg)
Relative Age• Relative Age - the age of an event or
object in relation to other events or objects
–Use words like older, younger, around the same time, etc…EX: My sister is older than me.
![Page 22: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/22.jpg)
Absolute Age• Absolute Age - The actual age of an
event or object– Use techniques to figure out actual age
• Radioactive dating, carbon dating
Lived:
1 million years ago
2 million years ago
3 million years ago
4 million years ago
![Page 23: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/23.jpg)
EXAMPLE:
• Relative dating
VS.
Numerical dating
![Page 24: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/24.jpg)
Questions??
![Page 25: Earth’s Age + Evidence. WARM UP 1)Ch 2A Diagnostic Test 2) Section Quiz: 2.2A](https://reader035.vdocuments.site/reader035/viewer/2022070308/551bd84c550346b4588b58ad/html5/thumbnails/25.jpg)
“SILENT STATIONS”