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5:35

Marker Beds

6:33

Index Fossils

8:09

Steno's Laws (How Rock Layers Behave)

7:44

Fossils

4:30

Catastrophism vs Uniformitarianism

7:06

Relative Dating vs Absolute Dating (Updated)

This is an updated version of my previous video about Relative vs. Absolute Dating.
How are relative dating and absolute dating used in geology? Explore relative dating of rocks and fossils, comparing strata, and absolute dating including Uranium-238 Lead-206 dating and Carbon-14 dating.
This is a great complement to my coloring page by the same name on Teachers Pay Teachers! Link in comments if you're interested.

มุมมอง: 123 474

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5:35

Earth's Magnetic Reversals

มุมมอง 4K4 ปีที่แล้ว

Earth's magnetic field flips from time to time! Here's a little bit about how this very strange phenomenon was discovered and what we know today about geomagnetism.

6:33

Marker Beds

มุมมอง 7824 ปีที่แล้ว

Marker beds are thin, distinct, widespread layers of rock left by some short-term event (such as a volcanic eruption or landslide) that are used to establish the age of nearby rocks and fossils. The story of a famous marker bed called the iridium anomaly relates how Walter and Luis Alvarez made a discovery that led to the theory that an asteroid caused the mass extinction that killed the dinosa...

8:09

Index Fossils

มุมมอง 79K4 ปีที่แล้ว

What are index fossils? This short video defines index fossils, shows how they are used to determine relative ages of rocks and fossils, gives examples, and lists characteristics of index fossils. It also explains why so many index fossils are marine organisms, even when they are found on land. Discusses both index microfossils and index macrofossils. This video is a great accompaniment for the...

7:44

Steno's Laws (How Rock Layers Behave)

มุมมอง 13K4 ปีที่แล้ว

In the 1600's, Nicolas Steno developed four laws that describe how layers of rock and sediment behave, paving the way for other thinkers to use rock layers to date fossils and rock formations. This video is a great accompaniment to the Relative Dating Rules coloring and note taking pages available on my Teachers Pay Teachers store. Link is in the comments if you're interested.

4:30

Fossils

มุมมอง 3064 ปีที่แล้ว

This is a short video that explains a little bit about fossils. What is a fossil? What are the different ways that fossils form? What's the difference between a microfossil and a macrofossil, a body fossil and a trace fossil? This video is a great accompaniment to the Fossils coloring and note taking page available at the Color Me Scientifically store on Teachers Pay Teachers. The link is in th...

7:06

Catastrophism vs Uniformitarianism

มุมมอง 25K4 ปีที่แล้ว

In the 1800’s, John Muir and Josiah Whitney waged a battle of ideas over the origins of Yosemite Valley in California. Although it got a little ugly, the disagreement was an example of two conflicting theories about how Earth’s surface got to be as it is today. This video explores catastrophism and uniformitarianism. This video is a great companion to the coloring sheet by the same title availa...

1:20

How to Take Notes on a Coloring Page

มุมมอง 9204 ปีที่แล้ว

This video shows teachers and students how to take notes with coloring pages from Color Me Scientifically. My coloring pages are available on Teachers Pay Teachers.

8:05

How Old Is Earth?

มุมมอง 3074 ปีที่แล้ว

How have ideas about the age of Earth changed over time, and how did people come up with those age estimates? This is a brief overview of ideas about the age of Earth. This video is a great companion to the coloring page my Teachers Pay Teachers store called “Geology Coloring: How Old Is Earth?” The link to the coloring page can be found in the comments if you are interested.

1:37

Make Your Own Geologic Timeline

มุมมอง 8K4 ปีที่แล้ว

This video that follows contains directions for assembling the "no adding machine tape" geologic timeline available on Teachers Pay Teachers. The link is in the comments if you are interested. What if you had your own time machine? Well, it might be cool, but the next best thing is a geologic timeline that you can build yourself.