Science
Space Exploration
Conceptual
9–11 yrs
Why the Sun Looks Brightest
为什么太阳看起来最亮
Description
Explain why the Sun appears much brighter than other stars: it is the nearest star to Earth, not the biggest or brightest star in the universe — understanding the difference between apparent brightness (how bright something looks) and actual brightness
Mastery Evidence
- State that the Sun is a medium-sized star that appears brightest because it is the closest star to Earth
- Explain the difference between apparent brightness (how bright it looks) and actual brightness (how much light it gives off)
- Give an example: a torch held close looks brighter than a distant floodlight, even though the floodlight is more powerful
Assessment Prompt
Does your child understand that the Sun looks so bright because it’s close, not because it’s the biggest star — and that some faraway stars are actually much larger?
