less exact, more mechanically complex than a mercury barometer
How does the finger over the straw thing work?
Before you put your finger on it pressure inside and outside are equal, you cover it and lift it up, some water falls out and the gas in the top part of the straw expands making the pressure inside the straw higher until the inside pressure + weight of the water = outside pressure.
hot stars are_, cooler stars are _
light power of the sun
What makes the sun shine?
In the sun, 4H becomes
Layers of the sun, inside to outside:
nuclear fusion, radiative zone, convection zone
Solar atmosphere, inside to outside:
Solar interior, photosphere, chromosphere, corona.
Where does visible light come from?
Local winds are caused by
bodies of water/land, mountains, elevation differences, vegetation differences (forests, deserts).
Prevailing winds are caused by
How do the ocean currents move around North America?
Down the west coast, up the east coast.
How do the ocean currents move around South America?
Down the east coast, up the west coast.
Dangerous current around the tip of South Africa
The west wind drift
the mass of water that a given volume of air contains
Hot air has a _ capacity to hold water than cold air
the ratio of actual water content to possible water capacity at a given temperature. (Content/Capacity)100%
the temperature at which relative humidity=100%
prevailing winds come over water, becoming moist- it hits a mountain- it rises up over the mountain- it cools and condenses into clouds/rain- it comes over the mountain and warms up, but it has lost all of its moisture, so it's dry and hot = desert.
Air masses have
characteristic temperature and humidity throughout.
Air masses are identified by...
the surface they're over (Continental, Maritime, Arctic, Polar, Tropical)