Phase Changes
Energy Transfer
Seasons
Math
Pot Luck
100
Heat absorbed during phase change is known as
latent heat
100
Energy transfer most associated with weather events
convection
100
What causes the seasons?
The tilt of the earth
100
Convert 35*C into Kelvin
35+273 = 308K
100
What traps infrared radiation in the atmosphere?
Greenhouse gases.
200
Heat released during phase change
sensible heat
200
Type of radiation that earth radiates in
long wave (infrared)
200
Where on Earth doesn't experience seasonal variation due to fairly constant insolation?
equator
200
What is 212*F in Celsius?
100*C (boiling)
200
What is the tilt of the Earth in degrees?
23.5*
300
Solid to gas
sublimation
300
Most common radiation wave for sunlight
Visible
300
What positions is showing the summer solstice for VA?
4
300
What is the potential energy of a 10kg ball at a height of 4 meters?
PE=mgh
10kg x 9.8m/s^2 x 4m = 392Joules
300
If an object has an albedo of 80, would you expect it to heat up fast? Explain.
No, 80% of radiation is reflected.
400
Gas to solid
deposition
400
What absorbs 100% of radiation? (Albedo 0)
a blackbody (theoretical)
400
Which position is demonstrating the day with the least number of daylight hours in the Northern Hemisphere?
2 (winter solstice)
400
If a 35kg snowball is rolling at 6m/s, what is its kinetic energy?
KE= 1/2mv^2
=630Joules
400
Where has the most Insolation in July (vernal day 90)?
90*N (the sun never sets)
500
Which phase changes release energy? Name 2.
deposition, condensation, freezing
500
If the albedo of an object is 12, how much energy does it absorb?
88% (100-12=88)
500
How high will the sun reach in the sky at 48*N on the winter solstice?
Sun is at 23.5*S
23.5 +48 = 71.5
90 - 71.5= 18.5*
500
What is the temperature of 64*C in Fahrenheit?
C x 1.8 + 32
64 x 1/8 +32 = 147.2*F
500
What season is shown for the Northern Hemisphere?
Summer