Estuaries are bodies of water in which salt and fresh water mix.
Estuaries have been called the "nurseries of the seas because they provide a safe area for fish, birds, and other animals to raise their young.

Estuaries can be classified based on their geographical features. The four main types include bar-built , coastal plain, tectonic esturary, and
fjord type estuary.

Updated version
https://youtu.be/ost7xq2MjVQ

Learn all about the largest phylum of organisms, the arthropods.
Arthropods have an exoskeleton, a segmented body, and jointed appendages.
Common arthropods are insects, crabs, ants, and lobsters.

Arthropods
https://moomoomath.com/charact....eristics-of-arthropo

In this video, I cover 4 differents methods for determining which fraction is the largest.
Method 1. Is the one method. If the difference between the numerator and the denominator is 1, then the fraction with the largest numerator is the largest fraction.

Method 2. You can cross multiple and the largest product is the largest fraction.

Method 3. You can divide the numerator ( top number) by the denominator (bottom number) in order to create a decimal and compare decimals.

Method 4. You can find a common denominator and divide the denominator into this number and then multiply the numerator by the product. This allows you to compare similar fractions.

Transcript
http://www.moomoomathblog.com/....2023/02/how-to-deter

The Metric System is a system of measurement used in the scientific community. It refers to SI units of measurement. It involves units of measure, prefixes, and is a decimal system based on 10.
Transcript
http://www.moomoomathblog.com/....2020/07/the-metric-s

Summary with Pictures
https://moomoomath.com/a-begin....ners-guide-to-the-me

Measuring Temperature
https://youtu.be/TIShPqStCEw

Freshwater biomes are ecosystems take contain water with a low salinity.
In this video, I cover rivers and streams, lakes and ponds, and wetlands.
Rivers are bodies of water that are moving. They begin at the headwater and usually dump. into a larger body of water.
Lakes and ponds can be small or very large bodies of water.
Wetlands include a marsh,swamp, bog or fen.

You may enjoy ..
What is a river delta?
https://youtu.be/lWgP6vN5s2c

Parts of the Brain-Middle School Science

25 Facts about the lobes of the brain
http://www.moomoomathblog.com/....2017/12/25-facts-abo

Cerebrum Top part of the brain and the cerebrum is separated into four lobes.
Temporal,parietal,occipital, and the frontal

Cerebellum also called the little brain
Controls coordination, balance, and helps us talk and walk

Temporal Lobe Helps us process sounds, in other words, helps us hear. Also helps some with balance.

Parietal Lobe It is called the “association lobe” It communicates with other lobes.The parietal lobe is where information such as taste, temperature, and touch are integrated, or processed.

Occipital lobe This lobe is responsible for processing your vision

Frontal lobe Is responsible for executive function. This includes memory, impulse control, your emotions, planning, and organization.

The brain stem controls the flow of messages between the brain and the rest of the body, and it also controls basic body functions such as breathing,, heart rate, and blood pressure,

Updated Version
Parts of the Brain
https://youtu.be/PKggtq1FSGI

You may also enjoy...
Left brain/Right Brain
https://www.youtube.com/watch?v=j2pHD50u9MQ
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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

You may enjoy " Activities to Improve Your Brain
https://youtu.be/4z1LMRjajaI

A Coulomb is the SI unit for charge. It is equal to 6.24 x 10 to the 18th power.
Electric power is voltage times current. Voltage is equal to Joule/Coulomb and an ampere is equal to a Coulomb/Second. Let's take a look at what this SI unit for charge.
A Coulomb is also equal to 1 ampere ( the si unit for current) times 1 second
1C = 1A x 1s
In other words, if the current in a circuit is 1 ampere then 1 Coulomb passes a point each second.
1A = 1C/s
More Information on a Coulomb
http://www.moomoomathblog.com/....2022/02/what-is-coul

The Electromagnetic Spectrum is made up of EM waves that are composed of oscillating magnetic and electric fields. This is why they are called ‘electromagnetic’ waves.
The electromagnetic spectrum is ordered by a frequency which is the number of wavelengths that pass a fixed point per second. The electromagnetic spectrum contains radio waves, microwaves, light,x-rays, gamma rays, and more.

Transcript
http://www.moomoomathblog.com/....2020/06/what-is-elec

Learn the relationship between force and distance in the work formula when it is applied to simple machines. Which simple machine requires the least amount of work, a short wedge or a long wedge?

More Information
http://www.moomoomathblog.com/....2022/03/simple-machi

A description of 11 body systems. I cover, muscular,urinary,respiratory,digestive,endocrine, reproductive,lymphatic,integumentary,muscular, and the circulatory system.

11 Body Systems
http://www.moomoomathblog.com/....2024/01/11-body-syst

What are the different types of solutions?
Isotonic which means equal
Hypertonic which means above
Hypotonic which means below
Tonic means strength

Types of Solutions
https://moomoomath.com/3-types-of-solutions/

These 9 phyla contain roughly 90 percent of all animals found on Earth. Phylum Porifera
Sponges are pretty basic animals with no specialized organs but they are filter feeders that suck up plankton and other organic matter found in the water

Phylum Annelida
This phylum is made up of Segmented Worms which include earthworms and leeches. This is a large phylum, with over 22,000 species including ragworms, earthworms, and leeches. In addition to having segments, these worms contain a digestive system, most have a closed circulatory system and a nervous system.

https://commons.wikimedia.org/....wiki/File:Nerr0328.j

Phylum Nematoda – The Roundworms These worms inhabit some bizarre places. Inside your intestines, the hearts of dogs, or inside wasps. Nematodes are very small, slender worms: Many are parasites but others are free-living

Phylum Platyhelminthes – The Flatworms are ribbon-shaped worms that can absorb food and oxygen through their skin by diffusion.: Examples include planaria, and tapeworms Many are parasites and some like the planarian can regenerate a copy of themselves if it is cut in half.

Molluscs (Mollusca)
This phylum includes snails, clams, slugs, squid, and their relatives. Mollusks are the largest marine phylum, comprising about 23% of all the named marine organisms molluscs have a mantle with a significant cavity used for breathing the presence of a radula which is similar to a tongue and a nervous system.

Arthropods (Arthropoda)
The largest animal phylum, This phylum includes crustaceans, insects, arachnids, and other organisms. Arthropods have an exoskeleton, segmented bodies, and jointed appendages

Echinoderms (Echinodermata)
Include Sea stars, sea urchins, and sea cucumbers Echinoderms have radial symmetry and are found on the sea bed at every ocean depth Echinoderms contain a water vascular system that helps with gas exchange, feeding, sensory reception, and locomotion

Cnidaria
Cnidarians are famous for their stinging cells. This phylum contains
Jellyfish, and sea anemones They mostly have two basic body forms: swimming medusae and polyps, both of which are radially symmetrical

All of the previous phyla contain animals that are invertebrates which means they do not have a backbone
Chordates include animals that have a notochord most people call this the backbone and a spinal cord
The phylum includes
All types of fish,
amphibians,

reptiles,

birds,

What is the difference between bacteria and archaea? Although they may seem to be the same,these two groups of organisms are different.

More Information
http://www.moomoomathblog.com/....2021/02/the-differen

Bacteria Cell Structure
https://moomoomath.com/bacteria-cell-structure/

The Earth can be divided into four hemispheres. The Northern, Southern, Eastern, and Western
I also cover the names of the 7 continents.

Transcript
http://www.moomoomathblog.com/....2020/11/the-four-hem

Rotation and Revolution of the Earth
https://youtu.be/-iztiJz7SJQ

Layers of the Earth
https://youtu.be/bJV5KHbghcQ

Learn about 1st class levers,2nd class levers, and 3rd class levers.
Levers are simple machines that are found in many tools you use at work and at home.
A first-class lever has the fulcrum in the middle and the load and effort on each side of the fulcrum.
2nd class levers have the fulcrum on one end and the load in between the fulcrum and the force.
A third class lever has the force in between the fulcrum and the load.
**** After listening to feedback from the comments the way I had the arrows it is confusing. I had the arrow on the load in the direction that it is acting on the load. This seems confusing. Also, I have a typo at the hammer and label it a 2nd class lever. I describe it as a 3rd class but label it a 2nd class. Sorry for the mistake.
As a result I created a new video, and added a nice mnemonic device to help memorize the different types.
https://www.youtube.com/watch?v=fzljPiPy9nw

Learn the difference between a solvent and a solute. A solute plus a solvent equal a solution. The solute is the object that is dissolved and the solvent is the object that dissolves.
In this video, I provide several examples such as coffee and sugar.
The solvent is the water and the solute is the soluble parts of coffee, sugar, and cream.
Transcript
http://www.moomoomathblog.com/....2019/02/solvent-solu

Many times mass and weight are used to describe the same thing. However, these two measurements are different. In this video, I explain the difference between mass and weight.
Mass is a measure of how much matter something contains, which equals the number of atoms in it
Weight is a measure of how strongly gravity pulls on something

The SI unit for mass is kilograms
The SI unit for weight is the newton N
Transcript
http://www.moomoomathblog.com/....2020/12/difference-b

Phylum Cnidaria This phylum is famous for having stinging cells. Jellyfish and sea anemones are phylum cnidaria examples.
Phylum cnidaria characteristics include stinging cells, symmetry, and are all invertebrates.
Keywords: cnidaria biology sponge porifera 15
evolution animalia species
anemone coral polyp medusa
jellies stinging animals
classification cnidarian
You may also enjoy..

The phylum cnidaria
https://www.youtube.com/watch?v=AjM-WOeM3uA

Cnidarian classification
https://www.youtube.com/watch?v=f4h77EptlW4

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