EducatorSharmin

  Tectonic Plates The Earth's crust is divided into large pieces called tectonic plates.  Plate tectonics, a theory dealing with the dynamics of Earth’s outer shell—the lithosphere—that revolutionized Earth sciences by providing a uniform context for understanding mountain-building processes, volcanoes, and earthquakes as well as the evolution of Earth’s surface and reconstructing its past continents and oceans. Types of Plate Boundaries: At divergent boundaries, plates move away from each other. This movement results in the creation of new crust as magma rises from the mantle, solidifies, and forms new oceanic crust. On land, divergent plate boundaries create rift valleys. The crust in these areas stretches and thins, causing the land to sink and create a valley. Magma from the mantle can rise to the surface, leading to volcanic activity. Divergent boundaries are responsible for the continuous reshaping and formation of Earth's crust. Convergent boundaries are places where te...

Comparing Decimal: Decimals are numbers that include a whole part and a fractional part , separated by a decimal point . They are an important concept in middle school math because they help us work with numbers that are not whole, like money, measurements, and weights.   Key Concepts About Decimals Structure of a Decimal Number : Whole Part : The number to the left of the decimal point. Fractional Part : The number to the right of the decimal point. Example: In 3.14, the 3 is the whole part, and 14 is the fractional part. Place Values in Decimals : Each digit in a decimal number has a place value: To the left of the decimal point: Ones, Tens, Hundreds, etc. To the right of the decimal point: Tenths, Hundredths, Thousandths, etc. Example: 12.345 Place values:  12 (Whole part) | 3 (Tenths) | 4 (Hundredths) | 5 (Thousandths) Decimals and Fractions : Decimals are another way to represent fractions. Example: 0.5 = 5/10 105 0.25 = 25/100 10025 You ...