Students Answer Monarch Butterfly Challenge Question #4
"How do you think monarchs know when it's time to leave
Mexico? (That is, how do you think the butterflies 'tell
the butterflies are born knowing the way to migrate back North that is an
instinct they have. We also think that certain conditions in the trees or
certain temperatures let them know it is time to leave.
The 2nd, 3rd
and 4th graders at the St. Paul Family Learning Center St. Paul,
Sue Leither (Sue@DesignLearn.com)
We think that when the days get warmer and longer the
butterflies will feel like mating. Once they have mated they will want to
come back north to lay eggs. Then they die after they've laid their
eggs.Then the cycle begins all over again. Next year they will be
migrating back to Mexico.
The weather is getting warmer and the sun
is out longer, so the days are longer. The flowers start blooming. The
monarchs have instincts to leave Mexico and start flying north. The
females are mating, then are looking for milkweed. Since they can't fly in
cold weather, they must wait until the weather is warmer. They left in the
fall because northern winters are too cold. Mrs. Siefert's 4th/5th grade
Mrs. Thornton's science class
From: WEST VIRGINIA
Dear Journey North,
We think the answer
to Challenge Question #4 is that they use their instincts. They can tell
by the light and the heat of the day that it is time to go. Then their
instincts will guide them where they need to go. We are third graders in
Mr. Phillips's class at Kanawha Elementary School in Davisville, West
Virginia working on our monarch butterfly project. Your friends,
Jordan Matthew Jones
Philip Edison Morris Mitchell James
Jay S. Phillips
We think the monarchs know when it is time to
leave Mexico by the length of daylight. They can determine when to start
migrating north by the photoperiod. As the days get longer, they realize
it is time to leave. They also know when to leave by the temperature. As
the temperature rises for several consecutive days, they know it is time
to migrate. Donna Wimmer
Sellersville, PA 18960
butterflies know when to leave Mexico because the days are getting longer
and the temperatures are changing.Send the sun up here to melt the snow so
that the milkweeds can start growing.
H.W. Knight P.S, Grade 5/6,
Julia Plewes (firstname.lastname@example.org)
Monarchs know when it is time to leave Mexico, because the
temperature gets warmer. Since monarchs are cold-blooded animals, they are
sensitive temperature. They know when it is getting warmer. Mrs.
Flatter's Fifth Grade L.E.A.P. Class
Selma Elementary School
The monarchs know
when to leave Mexico when the temperatures get warmer. Also, it might be
instinct. The butterflies are born knowing where to go when.
From: NEW YORK
I think that the Monarchs leave when the length of daylight is
right. Katie Anderson, Grade 4, East Moriches, NY.
We think monarchs
know when to leave Mexico when they finish laying their eggs. They might
also leave when the weather gets hot. It takes a certain time to lay eggs,
it is probably a natural instinct that they know to leave after mating.
Thats what we think about how they know when to leave Mexico. Our names
are Carlie, Karisa, Bryon, and Steven. We are from Mariposa, Ca. We are in
Mrs. Ubner's fifth grade class.
Because the humidity and temperture is getting to high
Alex, Joseph, Michael
THEY REACT DIFFERENTLY TOWARD THE SPRING SEASON
AND THEIR BODY TEMPERATURES ARE CHANGING.
Then they have thier babies,
and it starts getting warmer then they know when to come back.
the sun:when the sun comes up or goes down BY Rosie@Sunderland Elementary
School, Sunderland, MA When the sun gets very,very hot the Monarchs leave
Mexico. BY Tyler@Sunderland Elementary, Sunderland, MA I think they know
when to leave because they see all of the tourists leave. BY
Taylor@Sunderland Elementary, Sunderland, MA
I think they know because
Mexico gets cool. BY Chris@Sunderland Elementary, Sunderland, MA
Helen Kittredge (email@example.com)
We think monarchs know when to leave Mexico when they
finish laying their eggs. They might also leave when the weather gets hot.
It takes a certain time to lay eggs, it is probably a natural instinct
that they know to leave after mating. Thats what we think about how they
know when to leave Mexico. Our names are Carlie, Karisa, Bryon, and
Steven. We are from Mariposa, Ca. We are in Mrs. Ubner's fifth grade
class. mes (firstname.lastname@example.org)
students of Waterville Elementary think that there are several reasons
that Monarch Butterflys know when to migrate .One is that they can tell by
the day and month.They also can tell by their instinct.They can tell when
it gets warmer and their bodies start to warm up when the days are longer
and the nights are shorter, they know it's time to migrate. Diane Petersen
4-6th grade Mad Scientist
Waterville Elementary School
Waterville, WA 98858
When they feel the warm wind from the north, they know it
is time to migrate. The female monarchs need to carry their eggs to the
north for the warm weather. The mothers need nectar. The babies need
milkweed to eat. Monarch Team
Museum Magnet School 3rd Grade
Laura Kindig, 3rd Grade
The following answers are from 6th grade
students in Mrs. Knight's science Nick Peterson: I think they know
because of the photoperiod because the sun is up longer.
Monarchs know when to leave Mexico because when the days get
longer, they know that it's probably getting warmer, so they can come
I think monarchs know when to come back
from Mexico when it gets warmer there and that it might be warmer here.
They feel the temperature getting warmer
there and the sun coming out earlier and more and more of them keep
leaving each day.
I think they probably
look for signs of spring before heading back, like when it gets warmer,
flowers start to bloom, and when other animals like the robin start flying
They know because they might notice it
getting hotter in Mexico so they figure they're going to be roast monarch
if they stay there much longer. They know it's warm up here, but not as
warm as it is where they are. And since they don't want to get torched,
they come up here.
I think it might be that
they just know when to leave. Or it could be a change in temperature, or
something. They could just get tired of being there.
I think the monarchs know when to fly north because of when
thte sun rises and falls at a certain time (photoperiod).
I think it is because of the heat and how hot it gets, and
when it gets to a certain temperature they travel back.
I think the monarch butterfly can sense what the weather is.
They might leave becasue the trees' leaves turn green. I think the
weather, because it is usually warm when they come. It is usually spring
when they come, and it is warm in the spring.
It could be an instinct or a change in the weather that
they can sense with their antennae.
way I think monarchs are able to know whe it's time to leave Mexico is
when it becomes very warm for a week or so they know it's warm here and
fly back. It also may just be instinct.
think they know when it's time to leave Mexico when it gets warmer and it
starts to bloom. They know then to start coming back, so they know to come
back when it's warmer.
Maybe when it is
spring time Mexico's temperature goes up. They can tell whether or not
it's warm in the other states by how warm it is in Mexico. When it gets
hot enough, the say, "Time to go home!".
When it starts to storm in Mexico, they know it is time to
go back, because they can smell the air by flapping their wings.
Because I think it might get TOO hot for the monarchs
in Mexico, they come back.
Mrs. Angela Knight (email@example.com)