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7
Cut out a boat from a milk
carton shaped like this one.
Put a tiny chip of soap on the
back of the boat.
Gently put your boat in water
and watch it go-go-go!
Surface tension! Surface
tension pulls on things that
float in water. Soap breaks
surface tension at the back of
the boat. Surface tension pulls
the front more than the back
and the boat moves forward.
1.
2.
3.
Carefully set a needle in a cup of water until it
floats.
Ask another person to do it after you. If you
know the trick, his or her needle will not float.
1.
2.
Scrape some soap under the nail of your
middle finger.
Use your index finger and thumb to float your
needle.
Use your thumb and middle finger to remove
the floating needle. The soap under your nail
will mix with the water. This breaks the
surface tension and the next needle will sink.
1.
2.
3.
Standards Link: Investigation and Experimentation:
Follow a set of written instructions for a scientific
investigation.
Sunspots are dark areas that appear on the surface
of the sun. They are caused by strong magnetic
activity within the sun. Sunspots can change size
and move slowly across the surface of sun.
While our sun is special to us, there are billions
of stars like our sun scattered across the Milky
Way galaxy. The sun's gravitational pull is what
keeps the planets in orbit.
Every now and then a tremendous
explosion occurs on the sun
releasing gas into the
atmosphere. These are
called
wireless communications
millions of miles away
on Earth and create
light shows such as
the Aurora Borealis
or Northern Lights.
www.kidscoop.com © Vicki Whiting June/July 2020
Official Kids Mag
