4.7 Solar Radiation and Earth’s Seasons

What is the degree of earths tilt?

23.5

How long is earths revolution?

365 days ( 1 year), earths revolution around the sun

How long is earths rotation?

24 hours ( 1 day), earth rotates west to east

What is insolation?

incoming solar radiation

Where is the most amount of insolation?

the equator, nearly 90 degrees

Where is the least amount of insolation?

the poles

It is winter in the northern hemisphere when?

the northern hemisphere is tilted away from the sun

It is summer in the northern hemisphere when?

the northern hemisphere is tilted towards the sun

What is a solstice?

when the sun is at its minimum or maximum height in the sky at noon

When it is summer in the NH there is 90 degrees of insolation where?

tropic of cancer ( 23.5 N)

When its summer in the NH there are 24 hours of sunlight where?

in the artic circle

When its summer in the NH there are 24 hours of darkness where?

in the antartic circle

When is the summer solstice in the NH?

June 21st or 22nd, longest day in the NH

When its winter in the NH where is there 90 degress of insolation?

tropic of capricorn

When its winter in the NH there are 24 hours of sunlight where?

the antartic circle

When its winter in the NH there are 24 hours of darkness where?

the artic circle

When is the winter solstice in the NH?

December 21st or 22nd, shortest day in NH

What is an equinox?

when the suns direct rays hit the equator