Why are days longer than nights in the sunmmer?

Question

I need an easy , short answer for my science homework please.

Answer 1

If you can get to see an actual globe that has a tilted axis, make sure it is tilted so the N pole is pointing towards a light source (a flashlight).

Switch on flashlight and switch off main lights. now revolve the Earth. Note quite simply that with the globe tilted in this way the northern hemisphere spends longer in the light than the southern.

Tilt it the other way so s pole points to the light, spin it again and the n hemisphere now spends much less time in the light.

In both cases, note that the pole pointing away from the light never sees the light during the whole revolution.

If you can't get a globe, get a plain ball that you can draw on. Draw the equator around the fattest part. Holding the ball so the equator is parallel to the floor, mark the top and bottom as the poles. Then draw some shapes above and below the equator to simulate the continents (don't have to look like the real thin).

Then do the above with the ball. tilt it so the equator dips a little below level, and hold the ball in that position, turn on an axis through the n and s poles (as if you had a stick through the poles).

Note that the hemisphere above the equator spends more time in the light.

easier with a proper globe, but give it a go with a ball if you can.

Answer 2

As an extreme example of the effect of the tilt of the axis of the earth...imagine the north pole tilted directly toward the sun. In that scenario daylight would last 24 hours, with the sun almost directly overhead at the pole. Since the poles face the same direction in space all the time, but the earth revolves in a (nearly) circular orbit, the pole gradually would point away from the sun until it pointed directly away and then you would have 24 hour nights. Oh...and this is very nearly the situation on the planet Uranus, with an axial tilt of 98 degrees!

Answer 3

Due to the earth's axis tilt of 23 degrees and the position of the earth as it orbits the sun, the northern hemisphere is exposed to more sunlight for longer than the southern hemisphere. The reverse applies for winter.

Research an online diagram of the earth orbiting the sun which demonstrates the four seasons.

Answer 4

It has to do with the Earth's axis of rotation. In the summertime, the Earth's axis(the imaginary bar through the north pole and south pole) for the northern half of the equator is facing closer to the sun. Hence, more light, heat and perceived time during the "daytime" hours. This also gives the northern hemisphere "shorter" perceived nighttime hours. Extra credit: This is why when it's summertime in California, it's wintertime in Australia!!

Answer 5

The definition of summer is when the days are longer than nights, but getting shorter. Spring is when the days are longer than nights, but getting longer.

The tilt of the earths axis points the hemisphere with longer days toward the sun.

Answer 6

flab_n_40... is spot on.

It's difficult to explain without diagrams or a model. Due to the Earth's 23degree tilt, when it is on one side of the Sun, the northern hempishere is subject to longer daylight hours than the southern. And vice versa.

Answer 7

Because the sun is over earth longest during the Summer.

Answer 8

I think it's because the sun is closer to that part of the earth during the summer months.

Answer 9

the axis of the earth is tilted more to the sun i believe.