Measuring Matter

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Matter Noun

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[mat-er]

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Matter

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Anything that has mass and takes up space, which includes all physical substances in the universe.

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Example: The image shows solid, liquid, and gas states, illustrating how matter takes up space in different forms.

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Mass Noun

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[mas]

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Mass

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The measure of the amount of matter in an object, which remains constant regardless of location or gravity.

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Example: A balance scale with a feather and a rock shows mass by comparing their weights.

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Weight Noun

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[wayt]

Back

Weight

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A measure of the force of gravity acting on an object's mass, which can change depending on location.

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Example: An apple falling from a tree shows the force of gravity acting on its mass, illustrating weight.

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Volume Noun

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[vol-yoom]

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Volume

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The amount of three-dimensional space that a substance or object occupies or contains.

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Example: The image shows a 3D shape with labeled dimensions and calculates its volume as 24cm³.

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Density Noun

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[den-si-tee]

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Density

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A measure of the mass of a material contained within a given volume, calculated by dividing mass by volume.

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Example: Objects with different densities in water show how density affects floating and sinking.

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Gravity Noun

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[grav-i-tee]

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Gravity

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The universal force of attraction that acts between all objects with mass or energy.

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Example: An apple falling from a tree shows gravity pulling it toward the ground.

Front

International System of Units (SI) Noun

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[in-ter-nash-uh-nl sis-tuhm ov yoo-nits]

Back

International System of Units (SI)

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The modern form of the metric system and the most widely used system of measurement in science.

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Example: This image shows the seven base units of the International System of Units (SI) with icons and labels, helping students learn the metric system.

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Kilogram (kg) Noun

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[kil-uh-gram]

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Kilogram (kg)

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The base unit of mass in the International System of Units (SI), equal to 1,000 grams.

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Example: A scale showing kilograms helps explain how mass is measured in the International System of Units.

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Gram (g) Noun

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[gram]

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Gram (g)

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A metric unit of mass equal to one thousandth of a kilogram, commonly used for smaller measurements.

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Example: A digital kitchen scale displays grams, showing how mass is measured in this unit.

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Liter (L) Noun

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[lee-ter]

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Liter (L)

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A standard SI unit for measuring the volume of liquids, equal to one cubic decimeter.

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Example: A measuring cup with milliliter markings shows how liquid volume is measured in liters.