KIDS TRIVIA

KIDS QUIZ

SPACE EXPLORATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A Less bright star can seem to be brighter because it is
A
really big
B
has sparkles
C
is far away
D
is closer
Explanation: 

Detailed explanation-1: -A star’s brightness also depends on its proximity to us. The more distant an object is, the dimmer it appears. Therefore, if two stars have the same level of brightness, but one is farther away, the closer star will appear brighter than the more distant star-even though they are equally bright!

Detailed explanation-2: -They develop an understanding that stars vary in their size and distance from Earth. The sun is a medium size star that appears larger and brighter than other stars because it is closer to us.

Detailed explanation-3: -This relates the Apparent Brightness of a star (or other light source) to its Luminosity (Intrinsic Brightness) through the Inverse Square Law of Brightness: At a particular Luminosity, the more distant an object is, the fainter its apparent brightness becomes as the square of the distance.

Detailed explanation-4: -The apparent brightness of a star depends on both its luminosity and its distance from Earth. Thus, the determination of apparent brightness and measurement of the distance to a star provide enough information to calculate its luminosity.

There is 1 question to complete.