What causes the Sun to appear to rise in the east and set in the west?

About how long does Earth take to complete one trip around the Sun?

How far does Earth's axis lean from a line perpendicular to its orbital plane?

What mainly causes the yearly cycle of summer and winter in temperate regions?

An Earth model moves once around a lamp representing the Sun. How should its tilted axis be held to represent Earth accurately?

Equal amounts of light enter the two beams. Which labeled patch receives more energy per unit area?

Why do polar regions generally receive less solar energy per square meter than equatorial regions?

Which daylight pattern is typical at the equator throughout the year?

Six months after the position shown, what daylight pattern would locations on latitude circle A have?

At which event do locations in the Northern Hemisphere have their shortest daylight duration of the year?

At the June solstice, which pairing describes seasons in the temperate regions of the two hemispheres?

At the March equinox, how do daytime and nighttime compare in most places?

Where is the noon Sun directly overhead at the December solstice?

Manila is about 15° N. Which labeled noon Sun position would occur at the June solstice?

At the same location, sunlight becomes more nearly vertical. Compared with lower-angle rays, the same amount of energy covers a ___.

Two clear days have equal average sunlight intensity. Daylight lasts 10 hours on one and 13 hours on the other. Which receives more total solar energy?

In the Northern Hemisphere shown, away from the equator, how does daytime compare with nighttime?

Which season begins in southern temperate regions at the September equinox?

If Earth's axis were perpendicular to its orbital plane, what would happen to yearly changes in daylight duration at a given latitude?

If distance from the Sun alone controlled seasons, what would happen in the two hemispheres when Earth moved closer to the Sun?