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Overview of the Water Cycle 150 150 SchoolTutoring Academy

Overview of the Water Cycle

Water is the most abundant compound on earth’s surface, covering nearly 70% of earth. Water can change states among liquid, vapor, and solid. The Water Cycle, also known as the hydrologic cycle or H2O cycle is the circulation of water from the land to the sky and back again. The water moves from one reservoir…

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Understanding the Chemical Properties of Water 150 150 SchoolTutoring Academy

Understanding the Chemical Properties of Water

  Water covers about 70% of the earth’s surface, being the most abundant compound on the planet. It is tasteless, odorless and colorless. It is very commonly referred as universal solvent as many substances dissolve in it. Water exists in all three states; solid, liquid and gaseous. Water changing from solid to liquid is said…

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Rational and Irrational Numbers 150 150 SchoolTutoring Academy

Rational and Irrational Numbers

Rational numbers A rational number is any real number that can be written as a ratio, that is, it can be written as a fraction. A rational number can be expressed as terminating or repeating decimal. A rational number can be a natural number, decimal number, whole number, integer, mixed number or a fraction. Examples:…

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Geometry: Angles Formed by Parallel Lines and a Transversal 150 150 SchoolTutoring Academy

Geometry: Angles Formed by Parallel Lines and a Transversal

A transversal is a line that intersects two or more lines. When a transversal cuts (or intersects) parallel lines several pairs of congruent (equal) and supplementary angles (sum 180°) are formed.     In the above figure transversal t cuts the parallel lines m and n. Following types of congruent angles are formed: Corresponding angles:…

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Area of 2D figures 150 150 SchoolTutoring Academy

Area of 2D figures

The area of a figure measures the region enclosed by the figure. It is measured in square units, for examples, square inches, square centimeters, square yards, square meters. The table below shows the formulas for area of 2-dimensional figures with examples. SchoolTutoring Academy is the premier educational services company for K-12 and college students. We…

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Understanding Solid Figures Terminology – Vertex, Corner and Edge 150 150 SchoolTutoring Academy

Understanding Solid Figures Terminology – Vertex, Corner and Edge

Solid figures are three-dimensional (3-D) figures that have length, height and width. The three-dimensional figure can be hollow of solid. Let’s get familiar with few terms to understand the properties of solid figures. Face: is the flat surface of a solid figure. A face of a solid figure can be a square, a rectangle, a…

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Overview of Photosynthesis 150 150 SchoolTutoring Academy

Overview of Photosynthesis

Photosynthesis is a chemical process that converts carbon dioxide and water into especially sugar and oxygen using the energy from sunlight. Photosynthesis is made up of two words: photo which means light and synthesis which means composition. Photosynthesis is vital for life on earth. It is source of energy for almost all forms of life…

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Quadrilaterals and their Properties 150 150 SchoolTutoring Academy

Quadrilaterals and their Properties

Quad means four and lateral means sides. A quadrilateral is a 2-dimensional closed shape with four sides and four vertices (corners). The sum of the interior angles of a quadrilateral is 360°. A line segment drawn from one vertex to the opposite vertex is called a diagonal. AC and BD are the diagonals of the…

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Understanding Aerobic and Anaerobic Respiration 150 150 SchoolTutoring Academy

Understanding Aerobic and Anaerobic Respiration

All living things need a source of chemical energy in order to live.  Animals (and human beings) eat food as their source of chemical energy. Plants make food, using the energy of sunlight under the process called photosynthesis. Both animals and plants then release the energy from food by using the process of respiration.  Respiration…

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Complementary and Supplementary Angles 150 150 SchoolTutoring Academy

Complementary and Supplementary Angles

In geometry two angles can be related to each other in several ways. Below are two of them Complementary angles A pair of angles is called complementary angles if their sum is 90°. One of the complementary angles is said to be the complement of the other. For example, an angle of 35° is complement…

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