Although you may not see it, gravity is a force of erosion. Gravity not only influences the movement of water, but it also causes rocks and soil to move downward. This downward movement caused by gravity called mass movement plays a major role in shaping the Earth.

Sand, rocks, and soil will move downhill until the slope becomes stable. The angle of repose is the steepest angle at which loose material will not slide downward. The angle of repose may change based on the size, weight, shape, and moisture level of the objects which may cause rock falls or landslides.

The most destructive mass movement happens suddenly and rapidly.

A rockfall happens when loose rock fall down a steep slope. This steep slope may be manmade when creating a rode or created by nature.
Rocks that range in size from small fragments to large boulders fall down the slope due to gravity.

A landslide is the sudden and rapid movement of a large amount of material downward. A slump is the most common landslide and happens when a block of material moves downward over a curved surface.

A rapid movement of a large mass of mud is a mudflow. When heavy rain mixes with soil and rock a slippery mass of mud may be created that can flow rapidly downhill.

Mudflows as a result of a volcano are called Lahars. Volcanic eruptions or heavy rains on volcanic ash can cause a Lahar that may travel up to 80km an hour.
Sometimes the mass movement is very slow. This is called creep. Water loosens the soil on a steep slope, Plant Roots and animals loosen the soil which slowly moves downhill. Bent tree trunks may be evidence that creep is occurring.
Erosion #shorts
https://youtu.be/YbN8K_fL21g

Transcript
http://www.moomoomathblog.com/....2022/10/erosion-due-

Picture Mount St Helens
https://volcanoes.usgs.gov/vol....canic_ash/mount_st_h

Weathering-Erosion-Deposition
https://youtu.be/fLDjARWZmCA

Use these short cuts to help you learn the 8 phases of the moon
The 8 phases are,
New Moon
Waxing Crescent
1st Quarter
Waxing Gibbous
Full Moon
Waning Gibbous
Last Quarter
Waning Crescent
It takes the moon 29.5 days to go through these 8 phases.
I provide pictures to help you learn the moon phases

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

Moon Information
https://moomoomath.com/phases-....of-moon-explained-us

lobsters, crabs, copepods, and Krill are examples of crustaceans. In this video, I go over the characteristics that make a crustacean a crustacean.
More on Crustaceans
http://www.moomoomathblog.com/....2022/06/characterist

Global conveyor belt and thermohaline ocean currents. The ocean has waves and currents. I think of currents as rivers of water in water.
Because cold water is denser than warm water, the cold water sinks below warm water. Water with a higher salinity has a greater density than less salty water. As a result, currents can be created in the ocean.

The global conveyor belt is a series of ocean currents that snake around the world. They are called thermohaline currents because they are the result of changes in temperature and salinity.

The base of the world’s food chain depends on the
cool, nutrient-rich waters that support the growth of algae and seaweed.

Animation of the Oceanic Conveyor Belt
Title: Thermohaline Circulation using Improved Flow Field.ogv
Author: NASA/Goddard Space Flight Center
Date: 14 November 2011

https://en.wikipedia.org/wiki/....Thermohaline_circula

The MAD is the average distance of all of the elements in a data set from the mean of the same data set
You can think of it as how far each piece of information is from the average
If you look at MAD you have the mean which is the average, the absolute value, and deviation.
The MAD indicates how spread out your data set is.
A large MAD indicates a data set more spread out relative to the mean.
A small MAD indicates a data set less spread out relative to the mean.

This video helps with the following Math Standard
MGSE9-12.S.ID.2 Use statistics appropriate to the shape of the data distribution to compare center
(median, mean) and spread (interquartile range, mean absolute deviation, standard deviation) of
two or more different data sets.


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Mean Median Mode and Range
https://youtu.be/2N7na6aBvpk

Learn the difference between an isotope and an ion.
An isotope has the same number of protons but a different number of neutrons.
An ion has the same number of protons but a different number of electrons.

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

Layers of the Earth based on chemical composition and physical properties
Earth can be divided into three layers based on chemical composition: the crust, the mantle,
and the core.
Earth is also divided into layers based on physical
properties, such as whether the layer is solid or liquid.
The five physical layers are the lithosphere, asthenosphere,
mesosphere, outer core, and inner core.

Annelida Phylum
Learn facts and characteristics about this phylum that includes the earthworm. This phylum of segmented worms is famous for their segmented bodies. In addition, these worms have a nervous system, a digestive tract, and are found all over the world.
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For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an

The cytoplasm is the fluid found in cells.
Cytoplasm is found in eukaryotic and prokaryotic cells.
The fluid of cytoplasm is called cytosol. It is made up mainly of water
The organelles are found floating in this liquid along with many other items
You can almost think of the cytoplasm as a crowded swimming pool

Description of the sea floor. The description includes the continental shelf,slope, sea mont, abyssal plain and an ocean trench

Learn how the sulfur cycle works. Sulfur is essential for all living things in order to make protein.

Biogeochemical Cycles - How the Earth Recycles
https://moomoomath.com/how-the....-earth-recycles-elem

Learn how we classify living things using taxonomic rank. There are 8 levels of classification.
How do you create names for organisms that can be used anywhere in the world? This is where taxonomic classification, also called the Linnaean system, comes into play. Change music

Named after its inventor, Carl Linnaeus, a Swedish botanist, zoologist, and physician, the Linnaean classification system has 8 levels of classification. You may also hear this called a taxonomic rank. You will often see the levels displayed like a triangle. This is because the levels at the top are broad and general whereas the levels at the bottom are more specific. As you move down levels of taxonomic classification, the organisms will be more similar to one another.

The 8 levels of Taxonomic Classification are:

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

Alfred Wegener developed the theory of Continental Drift. It states that at one time the continents were at one time one large land mass that broke apart and the continents drifted away from one another. The continents move away at a rate of about 10 cm per year.

Playlist and summary of all Science Facts
http://www.moomoomathblog.com/....2023/02/science-fact

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

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 how the habitat and niche are different but also very important for a healthy environment.
A habitat is an ecological area where a plant or animal lives. It may be an island, a tree, or maybe under a rock. The habitat is where an individual can find food, shelter, protection and mates.
A niche is a role or position that an individual has in its environment. A niche may also involve what the individual eats, how it interacts with other living things, and also how it interacts with the nonliving factors. Without ecological niches, there would be less biodiversity, and the ecosystem would not be in balance.

For more information
https://moomoomath.com/biologi....cal-niche-and-habita ‎

Grasslands are a large area of the earth that have lots of grass and very few trees. The grassland biome is found in South Africa, North America, Hungary, Argentina Uruguay, and Russia.

Temperate grasslands have hot summers and cold wintersTemperate grasslands can be further subdivided. Prairies are grasslands with tall grasses while steppes are grasslands with short grasses.
Steppes receive less rainfall than prairies and receive only 10 to 20 inches rainfall a year. dry areas of grassland with hot summers and cold winters.

MooMooMath and Science upload a new math or science video every day. We have over 1400 math and science videos to help in school and life.
https://www.youtube.com/channe....l/UCE_WiQFez8FZcICpb

Check out another grassland called the savanna
https://www.youtube.com/watch?v=nKnV_7QzpNo

Introduction to Biomes
https://youtu.be/cXo9YczQBo4

Protozoan -Animal-like protists
In this video, I explore three types of protozoans
Ciliates, sarcodines, and flagellates
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For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an

In this video, I describe the 6 types of synovial joints found in the human body.
A synovial joint is a location where two bones meet that have cartilage at the ends, are attached by ligaments, and have a space filled with synovial fluid.
In this video, I cover 6 synovial joints.

Video Guide
00:00 Introduction to synovial joints
0:39 Ball and socket joint
0:54 Condyland joint
1:12 Planar joint
1:32 Saddle joint
1:42 Hinge joint
1:56 Pivot joint

Transcript
http://www.moomoomathblog.com/....2022/01/6-types-of-j

Element vs Compound
An element is a pure substance. In other words, an element cannot be broken down into a simpler substance by physical or chemical means.An element is made up of only one type of atom. An atom consists of a proton, neutron, and an electron. Some common examples of an element would be carbon, oxygen, or iron. The elements are arranged in the periodic table based on their number of protons. For example, sodium has 11 protons, potassium has 19
The number of protons of elements always stays the same.
Each element also has its own unique set of properties.

A compound is a pure substance of two or more elements chemically combined. Elements combine during a chemical change. A particle of a compound is called a molecule.
When the elements combine chemically a new substance is created.
The compound has different properties than the elements that make it
Hydrogen and oxygen are gases but they combine to make liquid water.
Here are some items that combine to make compounds
Table salt is sodium and chlorine
Glucose is made of carbon-hydrogen-oxygen
When elements create a compound they always join in a specific ratio
The ratio of water is hydrogen to oxygen is 2 to 1
If a compound has a different ratio of hydrogen to oxygen then it is not water
Glucose a type of sugar has a ratio of c6 h12 o6 which is 6 carbons 12 hydrogens and 6 oxygens
Glucose will always have this same ratio
Compounds are all around you
In the food you eat, the school supplies you use, your clothes and even you