Skip to main content

Week 9 - History of the Earth

 Lab:

This week in Lab we worked to create a realistic and to scale timeline of the creation of the universe all the way up until today. We divided our timeline into 14 meters to have 1 meter represent a billion years. Before we got to find out when humans, animals, and plants all appeared on Earth, we placed our initial individual guesses on the timeline so that we can see how that differed from when these things actually appeared/came to be. It was actually crazy to see how close dinosaurs, the first land animals, first land plants, humans, and the creation of the moon were in our timeline. I feel like in all our our educations, we would make these timelines but they weren't up to scale and they didn't accurately represent the amount of time between each of these milestones.

Lecture: Exam

Textbook: History of the Earth

I learned that the Earth was almost entirely ice at least 3 times in it's history. I remember reading about one of these event's briefly but didn't know that it happened on several occasions between 580 and 750 million years ago... wow... and the evidence we have of this comes from sedimentary rocks. Normally during an ice age, the types of rock being deposited by glaciers are found near Earth's poles. Geologists actually found glacial rocks (of similar ages) all over the world, leading to the Snowball Earth theory. 

What I found most helpful: The images on this were very helpful for my learning. In particular, i thought the picture representing the timeline we were creating as a clock was cool and a great way to introduce this to young students. It puts the timelines such close relativity into perspective that young learners can grasp. 



Comments

Post a Comment

Popular posts from this blog

Week 2 - How do we make a race exciting between people who run at different speeds?

Lab:       Today, we continued our thinking about how we can support play that is exciting but not dangerous. We narrowed in on how we can make a race exciting between people who run at different speeds and started by watching a video of "The Freeze" racing fans but giving each of them a head start. Each race he caught up to his opponent and ended up beating them in every clip of the video. We used the video as an example for our big question and inquiry for the day. We were asked to use our model of a race to develop a method to ensure that a race is exciting between two racers. Our groups thinking was that we needed to calculate our distance per second so that when we were matched up against our opponent, we can calculate the distance head start that they would need for the race to be a close call.  Our Data Table      Based off of our calculations we multiplied them by the race length to figure out how long each racer would take to complete the...
Post a Comment
Read more

Week 11 - Rocks and the Rock Cycle

Lab In lab we started by talking about the law of superposition... everyones fav! This law basically states that the older stuff is at the bottom and the longest is at the top. We used this to work to place different layers of rock in order from oldest to youngest based off different photos. Immediately, I was taken back to my ninth grade earth and space science class and I could remember doing exactly what we were doing in lab, but back in early high school... props to Ms. Howlett :)  Then we moved into talking about different characteristics that sand from different places had. We looked closely at sand from beaches, dunes, and rivers around the world. Our group decided to look at each group and write down observations about each sample. All of the different rock types were from different areas and all had different colors, were different shapes, and just looked different. We came up with some characteristics for sand found in rivers, dunes, and beach's.  River Sand Characte...
Post a Comment
Read more