Chem Quizziz 10-14-24

Open Ended

How was your weekend? What'd you do? Share your goals for this week?

​Heat Transfer

​Heat is the transfer of thermal energy from one object to another.

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This can occur three ways:

• ​Convection

• ​Conduction

• ​Radiation

​Conduction

​Heat transfer through direct contact between two objects or substances

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​Best in solids

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​When two things are touching, their particles interact and heat is transferred between them.

Multiple Select

Which of the following are examples of heat transfer through conduction? You may choose more than one.

• Using hand warmers to warm up your hands

• Hot air balloon rising

• Burning your hand on a curling iron

• Spoon getting hot while sitting in hot tea

​Convection

​Occurs in fluids like liquids and gases

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​As fluid heats up, the particles spread out, become less dense and rise

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​As fluids cool down, the particles become more dense and sink

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​"Heat Rises"

Multiple Select

Which of the following are examples of heat transfer through convection?

You may choose more than one.

• Hot air balloon rising

• The second floor of a house is warmer than the first floor

• Boiling water on the stove

• Sitting around a campfire and feeling the heat from the flames

​Radiation

​Transfer of thermal energy through waves

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​If you hold your hand near a hot object (such as a lightbulb or a candle), you can feel the heat transferred through waves

Multiple Select

Which of the following are examples of heat transfer through radiation? You may choose more than one.

• Feeling the heat from a candle

• The water at the top of the pool feels warmer than the deep end

• The sun warming the Earth

• A space heater warming the room

Sun Safety

​​You already know that a trip to the beach can give you a nasty sunburn, but the nitty gritty of sun safety is actually much more complex. Wrinkle-causing UVA rays and burn-inducing UVB's can pose a serious risk to your health (and good looks). So what can you do?

Open Ended

List some ways you can protect yourself from UV radiation from the Sun

​https://www.youtube.com/watch?v=8KPbudrY57c

Multiple Select

What are the types of UV rays from the Sun?

• UV A

• UV B

• UV C

• All of the above

Multiple Choice

In addition to hemoglobin, the other primary chromophore in the skin is:

• Melanin

• Tyrosine

• DNA

• RNA

Multiple Choice

UVB rays are primarily responsible for which of the following skin findings?

• Photoaging

• Skin cancer promotion

• Sunburn

• Wrinkle development

Multiple Choice

SPF is an abbreviation for:

• Solar prediction feature

• Solar probable feature

• Sunburn prevention factor

• Sunburn protection factor

Multiple Choice

Which of the following is a type of skin cancer with a relationship to sun exposure?

• Melanoma

• Retinoblastoma

• Ungual carcinoma

• Merkel cell carcinoma

Multiple Choice

Between spray and lotions, based on recent studies, which is a better application method?

• Spray

• Lotion

• Both are equally good

Multiple Choice

Which UV beads is exposed to UV light?

• Clear

• Colorful

Multiple Choice

Are UV beads reversible?

• Yes

• No