Why is it hot in summer and cold in winter?

Because the earth's axis is tilted.

It is all about the tilt of the Earth's axis. Many people believe that the temperature changes because the Earth is closer to the sun in summer and farther from the sun in winter. In fact, the Earth is farthest from the sun in July and is closest to the sun in January!

During the summer, the sun's rays hit the Earth at a steep angle. The light does not spread out as much, thus increasing the amount of energy hitting any given spot. Also, the long daylight hours allow the Earth plenty of time to reach warm temperatures.

During the winter, the sun's rays hit the Earth at a shallow angle. These rays are more spread out, which minimizes the amount of energy that hits any given spot. Also, the long nights and short days prevent the Earth from warming up. Thus, we have winter!

 EVERY DAY SCIENCE

1. Which is the outermost planet in the solar system?
1. Mercury
2. Pluto
3. Neptune
4. Uranus


2. The SI unit of charge is __________.
1. Ampere
2. Coulomb
3. Ohm
4. Volt


3. Very High Frequency (VHF) have __________ wavelengths.
1. shorter
2. shortest
3. longer
4. longest


4. Long-sight defect could be corrected by using __________ lens.
1. concave
2. vonvex
3. diverging
4. none of these


5. Deficiency of Vitamin-A results in __________.
1. night blindness
2. rickets
3. scurvy
4. hair fall


6. For a fixed mass of gass at constant temperature, if we decrease volume, the pressure will _________.
1. also decrease
2. increase
3. remains constant
4. none of these


7. The lifespan of Red Blood Cells is __________ days.
1. 60
2. 120
3. 180
4. 240


8. The density of water is __________.
1. 1 g/cm³
2. 1.5 g/cm³
3. 2 g/cm³
4. none of these


9. Radioactivity was discovered by __________.
1. Kelvin
2. Thomson
3. Rutherford
4. Bacquerel


10. A device which converts chemical energy into electrical energy is called __________.
1. motor
2. generator
3. moving-coil meter
4. battery