Heat Transfer
What type of heat transfer happens when you feel warmth from a fire without touching it?
(Radiation)
What causes wind to form?
(Warm air rises and cool air rushes in)
What is the greenhouse effect?
(The way heat is trapped near Earth by gases)
Why don’t global winds move in straight lines?
(Earth’s rotation – the Coriolis effect)
What are the doldrums?
(Calm, windless area at the Equator)
What type of heat transfer happens when heat moves through a metal spoon?
(Conduction)
What mainly causes surface ocean currents?
(Global wind systems)
Why are greenhouse gases important?
(They keep Earth warm enough for life)
What is the Coriolis effect?
(Bending of wind paths due to Earth’s rotation)
What causes land and sea breezes?
(Uneven heating of land and water)
What type of heat transfer moves warm air around in a room?
(Convection)
What do cold ocean currents do to the climate nearby?
(Cool the air above them)
True or False: Greenhouse gases should all be removed.
False: they are needed in balance
What 2 things only affect global winds (not local)?
Unequal heating of the Earth's surface drives large-scale convection currents in the atmosphere.
The Earth's rotation causes the Coriolis effect and affects the direction of global winds.
What can jet streams do?
(Cause precipitation, and warmer or cooler weather)
Explain how a double boiler uses heat transfer.
A double boiler uses conduction and convection. Heat from boiling water in the lower pan is conducted to the upper pan, while convection circulates warm water to maintain even heating.
Describe what happens to air in the doldrums.
In the doldrums, air is warmed by the Sun at the Equator and rises, creating an area of low pressure with little or no wind.
Why are greenhouse gases necessary for life on Earth?
Greenhouse gases trap heat in Earth's atmosphere, keeping the planet warm enough to support life.
What is the major driving force behind land and sea breezes?
The uneven heating and cooling of land and water causes land and sea breezes. Land heats and cools faster than water, creating pressure differences that move air.
What are three ways heat can move from one place to another?
Conduction (direct contact)
Convection (movement of fluids or gases)
Radiation (heat transfer through electromagnetic waves)
The doldrums are sometimes called a “windless zone” because sailing ships often become stranded in these areas. Air in the doldrums rises because it is
warmed by the sun at the Equator ( which is a form of radiation)
explains why global winds do not move in straight paths?
Earth’s rotation/ Coriolis effect
If greenhouse gases like carbon dioxide and methane increase too much,what would happen
they trap more heat in the Earth's atmosphere. This makes the Earth warmer than it should be, which is called global warming
How long does it take for the Earth to do one complete rotation?
24 hours
Name three ways jet streams can affect weather in the United States
Warmer temperatures and cooler temperatures, cause precipitation