810-Lancaster Farming, Saturday, August 20, 1988
HOW FISH BREATHE UNDERWATER
Fish brealhe by taking oxygen from water and releasing carbon doxWe
as humans do above water. But water contains about i/30(h the oxygen as
the same vofur
each side of'
GUIs are like t
flow of water.
GUIs are composed
extensions call
from each filament
Lamellae are*'
of the gill wh<
oxygen from
aid releases
carbon dioxide
//*!
i'*
GILL Al
SOURCE ANIMAL PHYSIOLOGY RogerEckeit WC FreemanandCo
HOW WORKER-HONEYBEES STING
Bee stings are one of man's most feared interactions with insects Bees, however, are not
inherently aggressive and sting only to defend themselves In to, bees are the only insect that
produces food (honey) for themselves and humans Bees are very enterprising and totally
committed to their hives. In fact, most of the bees fiat humans encounter are called "woiter
bees." Al woifcer bees are females that gather food for the hive, feed younger bees and tun i
nectar into honey. And, as illustrated below, tiey fight to the death to defend themselves
STINGER
SOURCE FRIBJOLYBEES, FBKXXJS BEES Mona Kerby FrarMm Wets
HOWW
FILAMENT
LAMELLAE
HOWW
ABDOMEN
arches sift water and
channel it into canals
formed by lamellae.
B Blood flows
through lamellae,
takes oxygen from
water and releases
carbon dioxide into the
water.
‘At the same temperature
©HOWWI96B
the bee from removing
the stinger.
0 Usually she is
forced to tear her
body away from the
stinger and leave it in
the victim's body.
B Left with a large
wound in her
abdomen, the bee
usually dies shortly
afterwards
HOWWI9BB
We Want To Hear From You
September 13 is National Grandparents Day. To celebrate
we want you to write and tell us about your grandma or
grandpa. Maybe you call them Pop-Pop or Gram. Whatever
you call them, you’re sure to have lots of fun together.
Tell us why you like them. What do you do with them? Do
you like to visit them? Make sure you include your grand
pa’s or grandma’s name and your own name, address and
age. Mail your replies to Kids’ Korner, Lancaster Farming,”
P.O. Box 366, Lititz, PA 17543. Deadline is September 5.
Remember, you can write and tell us about your pet or
yourself anytime you’d like. Send your letters to the
address listed above.
HOW TORNADOES WORK
Tornadoes* are violent wind storms that form at the bottom of thunderstorm
(cumulonimbus) clouds. Rising, warm, moist air collides with cool, dry air in the
atmosphere in a turbulent, counter-clockwise motion (in the northern hemisphere),
Winds inside tornadoes can reach speeds of 400 miles per hour and the spiral
can reach 30-300 feet in diameter Despite high wind speeds, tornadoes move
forward at only 10-25 miles per hour
©HOWWI9BB
WARM
AIR
COOL
AIR
SOURCE
McGcaw-HI
Encyclopedia Of Science and
Technology
Das warm air rises and
collides with cool air in the
atmosphere...
B ...the warm and cool air
begin to spiral in a
counterclockwise motion,
until...
1 (
B...the swirling motion
forms a funnel cloud that
reaches down from its host
cloud and carves a
destructive path.
ooa
AIR
WARM
AIR
Tornadoes however do
not always reach the ground