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Electromagnetic Spectrum And Heat Transfer
Test Description: Electromagnetic Spectrum
Instructions: Answer all questions to get your test result.
1) An electric hotplate is used to cook food in an all metal frying pan. Which best shows the path of the conduction of thermal energy?
A
Food to Pan to Handle
B
Handle to Coil
C
Pan to Coil
D
Coil to Pan to food
2) Which of the following heat exchange processes involves the collision of particles?
A
Insulation
B
Conduction
C
Convection
D
Radiation
3) How is energy transferred when an instant cold pack is put on a muscle injury?
A
Heat energy is transferred by convection from the cold pack to the muscle
B
Heat energy is transferred by radiation from the musle to the cold pack
C
Heat energy is transferred by conduction from the muscle to the cold pack
D
Heat energy is transferred by absorption from cold pack to the muscle
4) A class made a solar cooker out of a large can. What color should they paint the can in order to collect the most heat?
A
Pink
B
White
C
Green
D
Black
5) Why can you see someone clearly through a clear glass window but not through a frosted glass window?
A
Clear glass reflects light, but frosted glass absorbs light
B
Clear glass transmits some light, but frosted glass absorbs all light
C
Clear glass scatters some light, but frosted glass transmits all light
D
Clear glass transmits light, but frosted glass scatters light
6) In 2001, NASA launched a probe to investigate very low-energy radiation emitted when the universe began. What part of the electromagnetic spectrum does this probe observe and record?
A
Infrared
B
Visible
C
Ultraviolet
D
Microwave
7) How does the color of an object affect the amount of energy it receives from sunlight?
A
Dark colored objects absorb more light and become warmer than lighter objects
B
Dark colored objects reflect more light and become warmer than lighter objects
C
Light colored objects reflect more light and become warmer than darker objects
D
Light colored objects absorb more light and become warmer than darker objects
8) What is the effect of absorption of infrared light by human skin?
A
Feeling of warmth on the skin
B
Immediate death of skin cells
C
Disinfection of the skin tissues
D
Sunburn on the skin surface
9) What process in the atmosphere protects people from the ultraviolet rays in sunlight
A
Carbon Dioxide blocks ultraviolet light
B
Water vapor scatters ultraviolet light
C
Ozone absorbs ultraviolet light
D
Nitrogen refelcts ultraviolet light
10) Which would be the best conductor of electricity? `
A
Air
B
Cork
C
Water
D
Silver
11) You use a spoon to stir hot soup. Which of the following spoon handles would get hot the quickest?
A
A rubber spoon
B
A metal spoon
C
A wooden spoon
D
A plastic spoon
12) What best explains why some cooking pans have rubber handles?
A
The rubber in the handles keeps the food in the pan hot
B
The rubber in the handles is a good insulator
C
The rubber in the handles is easy to hold
D
The rubber in the handles keeps the metal in the pan cool
13) When potholders are sued to remove hot pans from an oven, the potholders are serving as
A
Conductors
B
Transmitters
C
Insulators
D
Reflectors
14) Which physical property is important to have in a materiel used in cookware?
A
High flexibility
B
Poor conductor of heat
C
Low flexibility
D
Good conductor of heat
15) Which material is the best conductor of heat at room temperature?
A
Air
B
Sulfur
C
Water
D
Copper
16) Which statement explains why heat from the Sun can warm up water in a glass?
A
Light travels in straight lines
B
Water refelcts light energy
C
Light travels very fast
D
Water absorbs light energy
17) When you are riding a bicycle at night, your bicycles reflectors help people in cars see your bicycle. How do bicycle reflectors work?
A
They are hooked up to batteries that allow them to produce light
B
They are covered with paint that glows in the dark
C
They bounce light back from other sources
D
They are made of a special material that gives off its own light
18) A worker for an electrical company is preparing to fix a power line. Why would he put on rubber gloves before working with any power lines?
A
Rubber is a poor conductor of heat and electricity
B
Rubber is a good conductor of heat but a poor conductor of electricity
C
Rubber is a good conductor of heat and electricity
D
Rubber is a poor conductor of heat but a good conductor of electricity
19) Why are some coffee cups composed of ceramic materials?
A
Ceramic materials are conductors that aid heat transfer
B
Ceramic materials are conductors that limit heat transfer
C
Ceramic materials are insulators that aid heat transfer
D
Ceramic materials are insulators that limit heat ransfer
20) Which is considered a good insulator of heat?
A
Silver, because heat is unable to flow easily through it
B
Glass, because it allows heat to flow easily
C
Aluminum, because it allows heat to flow easily
D
Plastic, because heat is unable to flow easily through it
*select an answer for all questions
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