Day and Night — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. What makes day turn into night on Earth?
A) Earth spinning
B) Sun moving
C) Moon hiding
D) Clouds covering
Earth spinning on its axis is what causes day to change into night.
2. Why can we not see stars during the day?
A) Stars sleep
B) Sunlight too bright
C) Stars are gone
D) Clouds cover them
Bright sunlight in the sky makes the tiny twinkly stars too hard to see.
3. About how long is one full day on Earth?
A) 1 hour
B) 12 hours
C) 24 hours
D) 100 hours
Earth takes about 24 hours to complete one full spin, making one day.
4. What do we call when the sun first appears in the morning?
A) Sunset
B) Noon
C) Midnight
D) Sunrise
Sunrise is when the sun first appears over the horizon each morning.
Part B: Fill in the Blank
Write the correct answer on each line.
1. The sun is a giant ball of hot gas that gives us light.
The sun is a star that gives Earth light, heat, and energy every day.
2. We see different stars in the night sky each season.
As Earth orbits the sun, we see different star patterns each season.
3. The moon reflects light from the sun to glow at night.
The moon does not make its own light; it bounces sunlight back to Earth.
4. When it is noon for you, it is midnight on the other side of Earth.
Earth is round, so opposite sides have opposite times of day always.
5. Day and night happen because Earth keeps spinning.
Earth constantly spinning is what gives us a regular pattern of day and night.