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TPK Learning is a digital platform designed to help students, parents, and teachers make learning easier and more accessible, anywhere and for everyone. We are using technology the way it should be used - as a valuable tool for positive change.

Like our page on Facebook! www.facebook.com/tpklearning
Visit our website to view more videos! https://tpklearning.com

Freshwater ecosystems
There are several different types of freshwater ecosystems.
Freshwater has a low salinity. In this video is cover streams and rivers, along with lakes and ponds.
In addition, I cover wetlands. There are two major types, swamps, and marshes. A marsh is a wetland without trees and a swamp has trees growing in the water.
There is no standard definition about the size of a pond or a lake, however, the water in lakes and ponds have low salinity.

Aquatic Biomes Crossword
http://www.moomoomath.com/aqua....tic-biomes-crossword

Walking water is a fun experiment in which paper towels transfer water from one cup to another. When you use different color water it makes the demonstration interesting.
In science experiments, you have three main variables. The independent, dependent, and control or constant variables.
The walking water experiment will help you learn about these variables.

More examples of Science Variables
http://www.moomoomathblog.com/....2019/02/learn-scienc

Hurricanes also called tropical cyclones are amazing, powerful storms that can bring destruction and misery to an area hit by the hurricane. The Congressional Budget Office estimates that 1.2 million Americans live in coastal areas at risk of “substantial damage” from hurricanes
In this video I will look at the causes these tremendous storms?
In the northern hemisphere most hurricanes will begin to form around the equator off the coast of west africa.
The official hurricane season is between June 1 and November 3o
Why do hurricanes occur during this time period.?
The reason is that hurricanes need the ocean surface temperature to be at least 79-degree Fahrenheit.
In addition, you need high pressure above the hurricane and low wind shear.
Between June and November both of these conditions are meet often
Hurricanes are like giant engines that use warm, moist air as fuel. That is why they form over warm ocean waters near the equator. The warm, moist air over the ocean rises upward from near the surface. As the warm air rises a low-pressure system is created.
Air from surrounding areas with higher air pressure pushes into the low-pressure area. Then that "new" air becomes warm and moist and rises, too. As the warmed, moist air rises and cools off, the water in the air forms clouds. The whole system of clouds and wind spins and grows, fed by the ocean's heat and water evaporating from the surface
Tradewinds which blow across the equator help push the storm along.
The hurricane will rotate in an in a counterclockwise fashion in the north due to the Coriolis effect.
The Coriolis effect is caused by the earth's rotation and curves air in the northern hemisphere to the right.
The hurricane will continue to move across the ocean and pick up strength if the water temperature remains above 79 degrees, high pressure remains above the storm, and there is moisture to fuel the storm.
Hurricane strength is measured by wind speed and barometric pressure.
The minimum wind speed to be classified as a hurricane is 74 degrees and category 5 hurricanes have a wind speed greater than 157 miles per hour.
As a general guideline, September is the peak month for hurricanes because of the warm surface temperatures during this month.

Heterotrophs vs Autotrophs An autotroph is also called a producer and a heterotroph is called a consumer.
A heterotroph is an organism that cannot practice photosynthesis and must consume other organisms for energy
An autotroph practices photosynthesis.

Topics Covered

Autotrophs
Heterotroph
Photosynthesis
Consumer
Producers
Carnivore
Herbivore
Omnivore
Decomposers
Detritivore
Scavenger
Saprophyte

How do ecosystems change over time?
Ecological succession, also called Biological succession occurs when one ecological community changes into another.
There are two main types of ecological succession.
Primary and Secondary Succession.
Primary Succession occurs when there is no soil and the new community has to start without any soil.
Secondary succession occurs when an event destroys an area but the soil remains.
The pioneer species are the first plants to appear in the new ecosystem.
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For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an

The Equinox is the date in which the day and night are equal. The Solstice is the longest day of the year? Because the Earth is tilted at a 23.5 degrees angle and also rotates and revolves around the earth the length of the day varies though out the year
During each equinox, both hemispheres receive almost equal amounts of sunlight
12 hours of daylight and 12 hours of nighttime.
Questions answered in this video?
What are the dates of the vernal equinox and the autumn equinox?
What are the dates of the summer solstice and the winter solstice?
What is the equilux?
When is the shortest day of the year?
When is the longest day of the year?

What happens during metaphase?
In this video, I would like to talk about the stage of mitosis called metaphase.
Mitosis consists of four stages and I always remember mitosis using PMAT
For Prophase Metaphase Anaphase Telophase
During metaphase the sister chromatids align in the middle of the cell.

However for this to happen a couple of things need to happen during prophase
During prophase the chromatin condenses into x shaped chromosomes.
Each half of the x is a sister chromatid and identical copies of the DNA
The two sides of the x shaped chromosome are attached at the centromere.

During metaphase spindle fibers appear These fibers create something called the spindle apparatus.
It consists of spindle fibers, centrioles, and another fiber called aster fibers
In plants, the centrioles are missing.
These spindle apparatus move to the poles of the cell.
The spindle fibers attach to the centromeres of the sister chromatids at the kinetochore.
After the spindle fiber is attached at the kinetochore the sister chromatid is pulled along the spindle apparatus and eventually end up in the middle of the cell.

Metaphase is the shortest stage of mitosis but is important because it helps ensure that new cells have correct copies of the chromosomes.
Take a journey to the cell
https://www.youtube.com/watch?v=QS274gwv_Sc

Let’s take a look at the difference between specular reflection and diffuse reflection.
Specular reflection reflects all light that arrives from a given direction at the same angle, whereas diffuse reflection reflects light in many different directions.
I also review the law of reflection and the difference between the incident ray and reflective ray.

Picture of spheres
https://en.wikipedia.org/wiki/....Specular_reflection#

Transcript
http://www.moomoomathblog.com/....2020/07/specular-and

The kingdom fungi are made up of lichen, yeast, mushrooms, and molds.

Table Contents the Fungi Kingdom
0:10 Introduction Kingdom Fungi
0:23 Fungi Facts
0:52 How Fungi are different than plants
1:17 Hyphae
1:36 Anatomy of Fungi
2:02 Types of Fungi Zygomycota
2:15 Sac Fungi
2:21 Club Fungi
2:40 Imperfect Fungi

Updated Video on Fungi
https://youtu.be/ao1SM_YH9Ws

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Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
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For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an

Parts of the small intestine
20 Small Intestine Facts
http://www.moomoomathblog.com/....2017/05/20-facts-abo small intestine is actually long.
It can be 18 feet in length.
It has three main parts. The duodenum, the jejunum and the ileum
It has two main jobbs-Digest and absord
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For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an

A keystone species has a large impact on their habitat given their size and numbers. Their daily activities impact all kinds of other species.
A keystone is a central stone at the summit of an arch, locking the whole together.
A keystone species helps keep the entire ecosystem together
When beavers build their dam and lodge they basically create their own wetlands which impact many other organisms.
In addition, as the number of beavers increase the biodiversity of the ecosystem increases, and also the inverse fewer beavers less biodiversity
You may have heard the expression “ Busy as a beaver?”
That is because they, well stay busy building stuff.
Beavers build dams and a lodge to live in.
The dam transforms a stream or creek into a wetland.
Transcript
http://www.moomoomathblog.com/....2020/11/keystone-spe

What makes an arachnids an arachnid? Spiders and mites are examples of arachnids. First arachnids are arthropods and in addition, they have 8 legs, no antennae, and no wings.
Spiders are arachnids and come in a variety of sizes and shapes.
Spiders are not insects, but instead, they are Arachnids.
Although a spider and insect have many of the same traits spiders have only two body segments and eight legs instead of six.

The exterior angles of a polygon are angles drawn from an adjacent side. The exterior angles also add up to 360 degrees.The interior and exterior angles add to 180 degrees.

Learn how to round decimals properly. The problem is it is hard to remember if you should round up or down.You can use
Four and below let it go
Five and above give it a shove
Round .15 to the tenth place
Round .8534 to the nearest hundreth

For more Math help visit our website
http://www.moomoomath.com/

An introduction to heating and cooling curve. In this video, I introduce heating and cooling curves and show the location of phase changes.

" A typical heating curve for a substance depicts changes in temperature that result as the substance absorbs increasing amounts of heat. Plateaus in the curve (regions of constant temperature) are exhibited when the substance undergoes phase transitions."

Standard SPS7.d. Analyze and interpret data to explain the flow of energy during phase changes using heating/cooling curves.

00:00 Introduction Heating Cooling Curves
00:15 Heating Curve Explained
01:33 Kinetic and Potential Energy on Heating Curve
01:44 Cooling Curve
01:56 Kinetic and Potential Energy on

Learn how to find the slope from a graph. The slope can also be called the gradient of the line.The slope is a measure of the rate of change of a line or the steepness of a line. The slope is represented by the letter m
Using a graph you can calculate the slope by using rise over run. The rise will be how the line changes vertically and the run is the change in the x-axis or horizontal change.
You may enjoy ...
Understanding Slope
https://youtu.be/vbfFwTmzHGQ

Perfect squares 1-25 Memorize the perfect squares with a simple song.
Transcript and lyrics here
http://www.moomoomathblog.com/....2020/03/perfect-squa

The earth has an abundance of water, and even appears blue from space. However, only a small percentage of the water on Earth is freshwater and much of this freshwater is either frozen or unattainable.n other words, freshwater only makes up roughly 3% of all of the water on Earth You will find the bulk of freshwater in these 4 main sources.

Surface waters ( Lakes, Rivers, Streams, Ponds, Swamps, marshes)

Glaciers and IceCaps

Groundwater ( Shallow and Deep)

Atmosphere