12A COTTAGE GROVE SENTINEL MARCH 29, 2017
© 2017 by Vicki Whiting, Editor Jeff Schinkel, Graphics Vol. 33, No. 16
To improve your basketball
skills and get some great
exercise, work on these drills
with some friends or family
members.
When a basketball is held
above the ground, it has a
lot of potential energy and no
kinetic energy. As it falls, it starts losing
its potential energy and gets kinetic
energy.
If you answered “b” you
are right! When a ball is
dropped to the ground,
it comes back up almost
to the point it was
dropped from, but
not quite.
When the ball hits the ground, it has
lots of kinetic energy. The friction
against the ground slows the ball
down, but it also slightly heats the
ball. This is thermal energy.
The ball bounces back up but to a
lower height than where it started.
The original potential energy was
transformed into thermal energy
and kinetic energy. And that’s just
the way the ball bounces.
The energy of motion. Anything
that is moving has kinetic energy,
and the faster it is moving, the
more kinetic energy.
An object high above the ground has
potential energy because of the work
it took to get it there and the work it
will do when it falls.
Shoot two free throws while
one player rebounds and the
other player sprints around
the half court. Then the
shooter takes
the rebounds,
the player
shooting
rebounds takes
the sprints and
the sprinter shoots two free
throws.
Thermal energy is the name for
energy that comes from the
temperature of an object.
How many
basketballs
can you find
on this
page in two
minutes?
Now have a
friend try.
Who found
more?
Imagine dropping a basketball from the top of these famous structures.
If the ball bounces 80% of the way back up toward the top, how many
feet/meters high would the ball travel for each? (Multiply each structure’s
height by .8 to discover the answers. The first one is done for you.)
Look through
the newspaper
for final scores
of basketball
games. Calculate
how many more
points the
winning team
earned than the
losing team.
Standards Link:
Research: Use the
newspaper to locate
information.
Circle the basketball that should come next to continue
the pattern in each row.
Standards Link: Math: Extend simple patterns.
Shoot 10 times from three
different places—first the
baseline, next from the
elbow of the
free-throw
line and the
following 10
from inside
the lane. Repeat
on the opposite side.
One player shoots
from a three-
point distance
and his partner
lets the ball
bounce twice and
then shoots from that spot.
Place markers
at different
points on the
court and set a
number for how many
attempts it should take
before scoring from that
spot. Start from the marker
and continue shooting from
wherever the
ball lands
until the shot
is made.
Keep track of
attempts. The
player with the lowest score
wins.
Standards Link: Physical Education: Use a
variety of basic and advanced movement forms.
POTENTIAL
SHOULDER
THERMAL
KINETIC
BOUNCE
ENERGY
GROUND
MOTION
HEATS
COURT
THREE
BALL
DUNK
WORK
I N O I
T O M P S T
S A C T H B Y O H O
H U I H E G W T O D
E T T R R R O E U R
A C E E M O R N L E
This week’s word:
FRICTION
The noun friction means
the action of one surface
rubbing against another.
T E N E A U K T D T
S E I U L N N I
E T
E R K G O D Y A R A
T R U O C B A L L M
The friction caused by
sliding down the rope
made Joe’s hands burn.
Try to use the word friction
in a sentence when talking
with your friends and
family today.
Energy Scavenger Hunt
Look through the newspaper for five examples
of energy being created or used. Discuss
whether or not the energy is kinetic,
potential or thermal.
Standards Link: Physical Education: Use a variety of basic
and advanced movement forms.
What is your favorite
sport or exercise? Write a
paragraph describing it and
the reasons why you like it.
Cottage Grove Sentinel
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