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63 Cards in this Set
- Front
- Back
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name six simple machines.
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inclined plane, wedge, screw, pulley, wheel&axel, lever.
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What are elements in a compound?
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The elements that make up a compound.
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What are diverging boundries?
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Boundries that move apart
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Describe a spectrum graph
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X, Y, and Z, the W contains all three put togehter and your going to be asked what Z is by looking at W.
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Why do you see only on side of the moon from earth?
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moons rotation= 29.5 days
moons revolution= 29.5 |
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Convection currents occur where?
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asthenosphere
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A current is made up of a flow of what?
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electrons
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What does the hertz-sprung diagram display?
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the temperature and colors of stars (the relationship between stars)
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Why is the earths core solid?
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Intense pressure pushes atoms together
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Differances in densities would mean a differance in
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mass
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Alpha particles are
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positivley charged and made on 2 neutrons and two protons
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What increases the rate of a chemical reaction?
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catalysts
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newtons third law
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with every action force there's and equal or opposite reaction force
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What does a wave carry through matter or space?
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energy
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Describe Kinetic energy.
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energy of a moving object due to the objects mass
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Define Fusion.
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Releases energy with extremly high temperatures
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light waves are
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electromagnetic
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what is a convection current?
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movement due to the differances in density
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define amplitude
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The maxium distance that particles of a wave medium vibrate from their rest position.
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what are water waves?
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transversal and mechanical
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What is electromagnetic number?
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a current by changing the magnetic feild
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What puts CO2 in the atmosphere?
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forest fires and burning of fossil fuels.
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What is the greenhouse effect?
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the warming of earths surface and lower atmosphere
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What breaks up a mixture?
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broken down by filtration, fractional distillation, and distillation
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What is a magnetic feild?
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a region where magnetic forces can be detected
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Where does a magnet exert the most force?
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the poles
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Force =
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Mass x Acceleration
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Speed =
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distance/time
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acceleration =
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f.v - i.v/time
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power =
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work/time
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How is a compound broken down?
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by heating
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Describe exothermic
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releases energy, warm
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3 factors that affect earths climate
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Earths tilt changes, movement of continents, green house effect
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What is frequency?
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the # of cycles or vibrations per unit time
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momentum =
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mass x velocity
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work =
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force x distance
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KE =
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1/2(m)(velocity)sqaured
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GRAV PE =
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(m)(9.8)(h)
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What causes tides on earth?
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Moons gravitational pull
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What is a transform boundry?
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Boundries slide past each other
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What is a convergant boundry?
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Boundries that move together
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What are 2 factors that affect gravitational force?
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Mass of objects and the distance between them
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What is a sound wave?
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longitudinal and mehcanical
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Why do you see a loss in mass in the test tube durning lab 6.1?
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a gas was given off
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What causes the ring of fire?
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Converging plates
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What phase must the moon be in for there to be a solar eclipse?
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New Moon
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What are Beta Particles?
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fast moving and can easily pass through paper
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What are the layers of the earth? (in order)
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lithosophere, asthenosphere, outer core, inner core
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Name two things you could do to increase the counting rate of a radioactive sample held a certain distance form the geiger counter.
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move the geiger counter closer, have a larger sample
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Sedimentary rock is named according to
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size of the fragments it contains
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Describe endothermic
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absorbs energy, cold
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What is a wavlength?
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distance from 2 points on a wave
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What ratio is oxygen to hydrogen?
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2:1
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Where is the earth durning a lunar eclipse?
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in the middle of the sun and the moon
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Gamma rays have
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no elctrical charge
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newtons first law
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Something at rest will remain at rest unless acted upon by force, something moving with contine moving till acted upon by unbalnced force (friction)
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what is friction?
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slows down and object moving
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How is it possible for a beta particle to be given off from a nucleus?
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b/c a neutron is made of a proton and an electron
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What is potential energy?
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energy being stored
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What are elements NOT able to do?
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be broken down into anything simpler
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What nucleur reaction is used to generate electricity in nuclear power plants?
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fission
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Why do we see phases of the moon?
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earths rotation and earths revolution, only part of the moon is visible from earth at differant times
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What are the phases of the moon in order? (start with full)
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full moon, wanning gibbious, third quarter, wanning cresnet, new moon, waxing crescent, waxing gibbious
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