Around which time of the year in the northern hemisphere is the Earth at the perihelion?
What will be an ideal response?
winter solstice
You might also like to view...
Carnot Engine: An ideal Carnot heat engine operates between reservoirs at 1740 K and 150 K. In each cycle, 260 J of heat energy is rejected to the low temperature reservoir. In each cycle, how much mechanical work W is performed by the engine?
Fill in the blank(s) with the appropriate word(s).
The four fundamental forces that operate in the universe today are
A) strong force, weak force, electromagnetic force, and gravity. B) strong force, weak force, electric force, and magnetic force. C) nuclear force, electromagnetic force, gravity, and tidal force. D) nuclear force, gravity, electric force, and magnetic force.
Where on Earth can you observe all the stars in the sky over an entire year?
A) North Pole B) Arctic Circle C) Tropic of Cancer D) Equator E) Everyone on Earth can see the whole sky.
Most of the mass of the Milky Way is in the form of
A) stars B) gas clouds C) black holes D) dark matter