Elementary Science

1. Changes in Heat

2. Why is it colder in the night than in
the day?
• The sun is the
greatest heat source
in the world.
• As the sun comes up,
it warms the world.
• As the sun goes
down, the heat is
taken away and it
cools off.

3. What will happen to this cold
snowman throughout the day as the
sun warms it up?
The warmth of the sun will
cause the snowman to melt.

4. What would happen to the
temperature of the boiling water in
this kettle if I added ice cubes?
The coolness of the ice cubes
would change the temperature of
the water from hot to lukewarm.

5. How is the change in temperature
of the snowman and the boiling
water related?
• The temperature of
both the snowman
and the boiling water
changed to a
temperature that was
not really cold or
really hot, but rather
somewhere in the
middle.

6. Insulators and conductors allow us
to somewhat control the flow of heat
or the change in temperature of
objects.

7. A cooler is an insulator.
• The molecules in
an insulator are
far apart. This
helps prevent
heat from flowing
in or out.

8. A pot is a conductor.
• The molecules in
a conductor are
close together.
This allows the
heat to move to
all parts of the
pot and the stew
in the pot.