Energy Conservation & Thermal Applications

[!] STUDY GUIDE: Big Ideas Use to answer form questions

1.Heat always transfers from warmer to cooler; 'cold' is absence of heat. Students often think cold transfers from cold objects to warm objects, but evidence from investigations shows otherwise. Use data from today's stations to identify which observations best support this understanding.

2.Temperature is average kinetic energy; heat is energy transferred due to temperature difference. Students often think temperature and heat are the same thing, but evidence from investigations shows otherwise. Use data from today's stations to identify which observations best support this understanding.

3.Insulators slow heat transfer; they don't create energy. Students often think insulators create warmth or coldness, but evidence from investigations shows otherwise. Use data from today's stations to identify which observations best support this understanding.

DRAW KEY TERMS Google each → Images tab → sketch what you see

Insulation

Material that reduces heat transfer

Specific heat

Energy needed to raise 1g of substance by 1°C

R-value

Measure of insulation effectiveness (higher = better)

Thermal Resistance

Material's ability to resist heat flow

OTHER VOCAB: energy conservation · design constraints · iteration

WRITE FOCUS QUESTION Your initial thinking

You fill a thermos with ice water before school. Eight hours later, you open it and the water is still ice-cold -- even though it sat in a hot car all afternoon. The same thermos can keep coffee scalding hot until evening.

How can some containers keep drinks cold for 24 hours?

I think...

WRITE AFTER HOOK FORM Reflect before continuing

I learned that...

Station 1 — Insulation Material Analysis

I observed that...

This shows that...

The key concept is...

WRITE STATION 2 NOTES Complete during Form 3 (Station 2)

Station 2 — Energy Conservation Calculations

Main idea I observed:

Evidence from my data:

I can apply this by:

Station 2 — Energy Conservation Calculations

The data shows...

This connects to...

The main idea is...

This connects to what we learned because...

I can apply this by...

DRAW CONCEPT MODEL Show your understanding visually

Draw a model that shows the main concept. Include labels and arrows to explain relationships.

Labels included

Relationships shown

Key terms used

CHECK TEST YOUR THINKING Rate each: FALSE ← 1-2-3-4-5 → TRUE

1. A thermos keeps cold drinks cold by adding coldness to the liquid inside.

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2. Temperature and heat mean the same thing -- a large pool and a small cup at the same temperature contain the same heat.

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3. Insulators generate warmth, which is why winter jackets make you feel hot.

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4. A thermos works by blocking conduction, convection, and radiation simultaneously.

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5. Materials with higher R-values slow heat transfer more effectively than materials with lower R-values.

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6. [Spiral - C7 Magnetic Forces] A bigger magnet always pulls harder than a smaller one -- size is the only thing that matters when comparing two magnetic forces.

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7. [Spiral - C7 Magnetic Forces] If I move a magnet twice as far away, the force becomes half as strong.

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Pick any TWO statements -- especially any you rated 2, 3, or 4. Justify your rating with evidence:

Statement #___ -- I rated it ___ because:

THINK SCIENTIST CIRCLE DEBRIEF Reflect after your Scientist Circle discussion

AHA! Moment

The one I changed my thinking most about is...

Remaining Question

I still wonder...

WRITE FOCUS QUESTION REVISIT Final written response

How can some containers keep drinks cold for 24 hours?

Word Bank: insulation · R-value · thermal resistance · specific heat · energy conservation · design constraints · iteration