Why do we have days and nights on the Earth?

Anonymous

∙ 13y ago

Updated: 8/19/2019

Because at night, we need sleep. And in the day time

the sun gives out vitamin D, necessary for healthy bones.

Because the earth turns and the sun can only shine on one side at a time so at night were on the dark side

Wiki User

∙ 13y ago

What else can I help you with?

Why are days and nights not equal on the earth?

because earth is rotating and revolving

Which would be longer on your planet your planet your days or nights to earth?

Days are longer than nights in the summer, and the reverse in the winter.

What planet has cold nights and hot days?

Earth

How long are the nights in Venus?

About 121 Earth days

What causes Earth''s rotation?

Days and nights, sunrises and sunsets.

How do the days and nights occur?

Days and nights occur because of the diurnal rotation of the earth. The sun stays still, and the earth spins once a day, so for 12 hours half the earth is in sunlight.

Why do days turn into nights continuously?

The earth rotates on its axis

How long are the nights on the planet Venus?

about 121 earth days

Is days and nights is equal at equator?

There are some tiny variations because of the tilt of the earth, but we can say that days and nights are roughly equal at the equator.

Are days and nights on mars long or short?

They are around the same length as days on Earth.

Do we have days and nights because the sun orbits the earth?

No. (But if you like that idea, go read Terry Pratchett.)

Why did God flood the earth for 40 days and nights?

Because the earth was full of wicked things