As Earth revolves, it __________________ tilts toward the Sun.

As Earth revolves, it __________________ tilts toward the Sun.

• A. Sometimes
• B. Always
• C. Never
• D. Rarely

Answer: (A)

The key idea is that Earth's axis is tilted relative to its orbit around the Sun, and this tilt changes how the Sun’s light hits Earth over the year. As Earth travels around the Sun, the tilt means that at different times one hemisphere is leaning toward the Sun while the other leans away. That leaning toward the Sun happens for part of the year and then switches to leaning away later, which is why we have seasons. So, as Earth revolves, it tilts toward the Sun during some portions of the year and away during others. This makes the statement true only sometimes.

The key idea is that Earth's axis is tilted relative to its orbit around the Sun, and this tilt changes how the Sun’s light hits Earth over the year. As Earth travels around the Sun, the tilt means that at different times one hemisphere is leaning toward the Sun while the other leans away. That leaning toward the Sun happens for part of the year and then switches to leaning away later, which is why we have seasons. So, as Earth revolves, it tilts toward the Sun during some portions of the year and away during others. This makes the statement true only sometimes.