Why are summers hotter than winters? Relate this to the Sun's position in the celestial sphere and the length of the days

What will be an ideal response?


The Sun is 47 degrees higher in the noon sky for northern hemisphere observers in June than in December, and also gives several extra hours of daylight as well.

Physics & Space Science

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Which of the following statements about ozone (in Earth's stratosphere) is not true?

A) The presence of ozone was crucial to the origin of life some 4 billion years ago. B) Ozone is a form of oxygen. C) Ozone absorbs harmful ultraviolet light from the Sun. D) Without this ozone, Earth would not have a stratosphere.

Physics & Space Science

As a tile falls from the roof of a building to the ground its momentum is conserved

A) True B) False

Physics & Space Science

Which of the following statements best summarizes current evidence concerning dark matter in individual galaxies and in clusters of galaxies?

A) Within individual galaxies, dark matter is always concentrated near the galactic center, and within clusters it is always concentrated near the cluster center. B) Dark matter is present in individual galaxies, but there is no evidence that it can exist between the galaxies in a cluster. C) Dark matter is present between galaxies in clusters, but not within individual galaxies. D) Dark matter is the dominant form of mass in both clusters and in individual galaxies.

Physics & Space Science

A car moving at a constant speed goes around a curve of 400-ft radius and then goes around a second curve of 200-ft radius. The centripetal force acting on the car as it goes around the 200-ft radius curve is ___________ the value of the centripetal force acting on the car as it goes around the 400-ft radius curve

a. one quarter b. one half c. the same as d. twice e. four times

Physics & Space Science