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59 Cards in this Set
- Front
- Back
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there are how many known elements on the periodic table?
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115
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atoms are what that the wavelength of light?
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smaller
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a simple barometer consists of?
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glass tube, mercury, and vacuum
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99% of earth's atmosphere is below?
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30 km
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when a storm is approaching, atmospheric pressure will?
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increase
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the period of a pendulum depends on?
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length of the string and accel. of gravity
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all waves occur due to something that?
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vibrates
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When a wave vibrates, there is a transfer of? but not a transfer of?
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energy; matter
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shock waves exist in how many dimensions?
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3
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Things that travel in waves are?
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beach waves, radio waves, light waves
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when natural frequency equals forced vibration, you have?
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resonance
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sound can, doesn't matter, cannot travel through a vacuum
due to? |
cannot!
no medium |
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a sounding board does what to sound?
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amplifies
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anything above what is harmful to the human ear?
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85dB
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who is the man that came up with the measurement for intensity?
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Alexander Graham Bell
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Light has a dual nature that is part what? and what?
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particle; wave
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the first two scientists to believe light traveled in waves are?
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Empedocles and Huygens
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who came up with the photoelectric effect?
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Einstein
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in 1675, who discovered the speed of light by looking at a moon of Jupiter?
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Roemer
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In 1880, The American Physicists.... found the exact speed of light using mirrors
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Michaelson
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all matter has what?
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Kinetic energy
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between 0 degrees Celsius and 4 degrees Celsius, the structure of water what?
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contracts
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what phase of matter expands and contracts the most?
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Gas phase
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A substance will always, never, sometimes increase when temperature when heat is added?
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sometimes
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The value for specific heat of water is?
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1 cal/g
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what is the best conductor
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metals
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good conductors have loosely bound?
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electrons
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temperature equalization can occur by?
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convection, conduction, radiation
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insulators what the rate of heat transfer?
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delay
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water is a good insulator true or false?
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true.
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convection occurs in what and what?
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liquids and gases
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convection occurs due to the creation of a?
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current
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convection currents create?
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wind
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convection currents are most evident near?
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oceans
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The sun warms up the Earth by?
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radiation
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Radiant energy is transmitted in the form of?
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electromagnetic waste
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a characteristic of a good insulator is that it is?
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porous
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a good emitter is a good?
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absorber
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every object always, sometimes, never emits radiant energy?
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always
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at night, the Earth acts as a what?, while during the day, the Earth acts as a what?
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emitter; absorber
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Global warming occurs primarily due to the molecule?
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Co2
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The central element of life is?
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carbon
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What fuels come from dead things make of carbon?
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Fossil fuels
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three types of alternate energy that can be used instead of burning carbon are:
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wind, solar, wave
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When carbon bonds break what and what are released?
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energy; carbon dioxide
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what is ancient life liquefied, while what is ancient life in a rock?
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oil; coal
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CO2 can be absorbed by what and what?
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trees and oceans
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what is a way to remove CO2 from the atmosphere?
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Carbon sequestration
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energy from carbon bonds turn into what when they are broken down in your stomach?
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calories
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the average temp. of earth's surface is?
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14 degrees Celsius
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Other atoms that can create energy besides carbon include?
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uranium; hydrogen; plutonium
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what are areas hotter than their surrounding environment?
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Urban Heat Islands
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the first primitive greenhouse grew what?
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cucumbers
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Three renewable sources for solar power include:
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wind, wave, biomass
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only what % solar radiation actually reaches the Earth's surface?
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50%
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The most stable atom for carbon to find is?
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oxygen
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three non-renewable resources include;
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coal, oil, natural gas
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the who and who were the first to use advanced solar architectures?
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The Greek and Chinese
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The three categories for solar cookers are:
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box cooker, panel cooker, reflector cooker
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