MS-PS3-4: Energy, Matter, and Temperature

Front

Thermometer Noun

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[ther-mom-i-ter]

Back

Thermometer

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A device used for measuring and indicating the degree of hotness or coldness of a body or environment.

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Example: A digital thermometer with a probe displays temperature, showing how it measures heat.

Front

Temperature Noun

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[tem-per-uh-cher]

Back

Temperature

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A physical quantity that expresses the degree of hotness or coldness of a substance or object.

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Example: Molecules in hot areas move faster, showing higher temperature compared to cooler areas.

Front

Density Noun

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[den-si-tee]

Back

Density

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The measure of mass per unit of volume, indicating how tightly packed the matter in a substance is.

---

Example: Objects with different densities float or sink in water, showing how tightly packed their matter is.

Front

Buoyancy Noun

---

[boi-uhn-see]

Back

Buoyancy

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The upward force exerted by a fluid that opposes the weight of an immersed object, causing it to float.

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Example: The image shows how different objects float or sink in water, demonstrating buoyancy.

Front

Fahrenheit Noun

---

[far-en-hahyt]

Back

Fahrenheit

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A temperature scale where the freezing point of water is 32 degrees and the boiling point is 212 degrees.

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Example: The image shows Fahrenheit and Celsius scales, highlighting water's freezing and boiling points.

Front

Celsius Noun

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[sel-see-uhs]

Back

Celsius

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A temperature scale where the freezing point of water is 0 degrees and the boiling point is 100 degrees.

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Example: The image shows water freezing at 0°C and boiling at 100°C, illustrating the Celsius temperature scale.

Front

Centigrade Noun

---

[sen-ti-greyd]

Back

Centigrade

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The former name for the Celsius temperature scale, based on a 100-degree interval between freezing and boiling points.

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Example: A thermometer showing the centigrade scale, illustrating the Celsius temperature range.

Front

Expands Verb

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[ik-spandz]

Back

Expands

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To increase in size, number, or volume, often as a result of being heated.

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Example: Heating the metal ball causes it to expand and not fit through the ring.

Front

Contracts Verb

---

[kon-trakts]

Back

Contracts

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To decrease in size, number, or volume, often as a result of being cooled.

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Example: Cooling causes particles to move slower and closer, showing contraction.

Front

Bimetallic Strip Noun

---

[bahy-muh-tal-ik strip]

Back

Bimetallic Strip

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A strip made of two different metals bonded together that bends when heated due to their different expansion rates.

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Example: The image shows how a bimetallic strip bends when heated or cooled, explaining thermal expansion.

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