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Worms need to remain moist in order to survive. The hot sun of the daytime will dry out their skin, and they will die, so they remain under ground and only come out during the moist night air to feed and move about on the surface. Worms breathe by absorbing oxygen through their skin and if there is sufficient oxygen in water, they will breath under water and will not drown, but rain water might not provide the most hospitable environment for their survival.
There are many scientific theories as to "why" worms come to the surface when it rains. Some research suggests that the underground water during rain can lack sufficient oxygen, which encourages the worms to seek the moist open air above ground. Another contributing factor is believed to be because the rain water makes the soil acidic, which can be fatal to worms, and perhaps the flooded tunnels and moist soil become too difficult to navigate. There is also the fact that worms move about and travel more easily on the moist surface which makes it easier to mingle with other worms and mate - which might be the primary reason they come out, or just a convenient benefit of the circumstances that drove them to the surface.
Wiki User
∙ 10y ago
Wiki User
∙ 14y agoEarthworms come out of the ground because the water in the soil prevents any oxygen from being in the soil. The earthworms would drown if they didn't rise to the surface. As the soil dries and oxygen returns they can go back into the soil.
Wiki User
∙ 12y agoThey come to the surface after it rains because the boogy man, who was buried under the earth in 1292 b.c. comes to life when it rains and the worms are terrified of him so the crawl to the surface to escape his wrath.
Wiki User
∙ 6y agoSImply because - if they stayed in their burrows - they could drown ! In manicured lawns etc - the rain stays mainly at the surface - so many earthworms simply dig down to a deeper level. Those caught just under the surface of the lawn are better off in the open - though they run the risk of being eaten by predators.
Wiki User
∙ 14y agoTo mate
---------------------------------- Check out the link below
Wiki User
∙ 14y agobecause they have sex in the rain and reproduce
To mate
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Check out the link below
Wiki User
∙ 13y agoThey crawl to the surface because worms are going to drown in the soil so they go up and get away from the soil to save their lives
Wiki User
∙ 13y agoso they dont drown in the wet soil!
Wiki User
∙ 14y agoMagic
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How does a flood change Earth's surface?
what it does is rains so much for hours that it starts to pile up and flood the earth.
How many different types of earth worms are there?
an earth worm is a type of worm.There a no types of earth worms
Do toads eat earth worms?
No, frogs do not eat earth worms. They tend to eat flys or they could also eat really tiny minnow's. But no they do not eat earth worms.
What do you call a person who studies earth worms?
Helminthology is the study of worms
Are earth worms decomposers?
yes
How do worms breathe underwater?
worms can live for weeks in water. They do not leave the ground because they will drown when it rains, they surface because it is moist. Worms breath through skin, but it needs to be moist and cool or their skin will dry out. They surface when it rains because its safer for them to travel above ground at tht time.
How does water get beneath earth surface after it rains?
Water table
How does a flood change the earth surface?
what it does is rains so much for hours that it starts to pile up and flood the earth.
How does a flood change Earth's surface?
what it does is rains so much for hours that it starts to pile up and flood the earth.
Who do segmented worms get water?
they get water when it rains
Are centipedes or worms more common?
worms because when it rains the worms come out of soil and usually, centipedes dont
What do worms do for air when it rains?
Get to higher ground or drown.
Why is it beneficial for worms to rise to the surface while its raining?
I think because they need air. They can breathe underground because there are spaces between the earth, but cannot breathe underwater, just as humans cannot. When it rains, the ground becomes saturated, resembling an underwater condition.
How do you know how drizzle is formed?
Drizzle occurs when it rains slightly. Few rain drop reaches earth surface.
Do worms live in wormholes?
no. worms live in holes in the ground that they dig in the dirt after it rains. wormholes are something in space.
When was Worms of the Earth created?
Worms of the Earth was created in 1932-11.
Why do worms cross the street when it rains?
Worms do not cross the street when it rains. Worms prefer to remain in moist soil but retreat to concete surfaces when the soil becomes saturated with water. hm mm i would think that they like the water and not only the dry ground..that should actually be common sense!!
