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SCI 241B FINAL
Terms in this set (42)
constant speed (e.g Police car)
stable change in motion with time
(rate of motioin= change of position with time)
variable speed (e.g. Pullback car)
slow down or speed up
constant acceleration (e.g. marble on ramp)
rate of change of the speed is the same
periodic motion (e.g. pendulum)
cycles through the motion
(speed and acceleration changes)
What are contour lines?
Lines that connect points of the same elevation
What is a contour interval?
The difference in elevation between two contour lines that are side by side
move past eachother
What process drives plate tectonics?
o Cooling earth theory
o Massive land bridges theory
What do all minerals have in common? (Or, what defines a mineral?)
• Natural occurring solids
• Made of 1 or more elements
• Internal crystalline structure
• Same chemical and physical properties no
matter where they are found
o Formed when magma cools
o Makes crystals
o Forms at or near earth's surface
o Forms through deposition of water, wind, or ice
o Formed after rocky material experiences intense heat and pressure and cools back into a solid
o Igneous and sedimentary can turn into metamorphic, but metamorphic can only change into another metamorphic
What are the main components of soil?
• Mineral matter
• Soil air
• Soil water
• Organic matter
Is soil an easily renewable resource? Why or why not?
No, because as water passes through the nutrients are removed.
In what ways do glaciers erode or change the landscape underneath?
As the glaciers melt and move across the land, they make the valleys wider and smoother
What causes the Earth's seasons?
The tilt of the earth causes the differences in the sun's path in the sky, which varies 1. The amount of energy received at a given location and 2. The time the sun is in the sky
Understand the relationship between air temperature and pressure
Air can hold less water the higher the temp and pressure, which is why it becomes less dense
How the relationship between air temp and pressure affects how much water the air can hold.
The denser the air is, the more water it can hold
An object in motion
o Gravitational potential energy (related to height or elevation)
o Spring potential energy (compression or stretch)
related to noise
related to light
Electrical Energy (EE)
use of battery or other electricity
Chemical or Biological Energy
energy released or absorbed during a chemical reaction
Not temperature, but rather a measure of temperature
For any isolated system, energy is neither created nor destroyed, but may change type.
allow charges to move freely
do not allow charges to move freely
different poles (north and south) face each other and pull together
same poles face each other and push apart
moving electrons with moving magnet fields
what makes the tape jump
moving magnet fields by moving electrons
basic parts of a circuit
• Complete unbroken path
• Power supply
o Battery or genecon
• Something in the system to transfer energy
o Wire itself
a magnetic material...?
• Contains iron
• Attracts other materials
a non-magnetic material...?
Is only attracted to other materials
Why do we use "North" and "South" to describe the poles of a magnet?
The specific end geographically faces north/ south
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