Let's dance
What kinds of energy does burning make?
heat and light
sound and electricity
heat and light
6 x 2 + 4 x 3
6 x 2 + 4 x 3
12 + 12
24
10 x 2 + 10 x 3
10 x 2 + 10 x 3
20 + 30
50
9 x 2 + 9 x 3
9 x 2 + 9 x 3
18 + 27
45
A shadow is made when something blocks _____________________.
light
What energy does a dog barking make?
sound energy
How can you make heat?
Sing as loud as you can.
Rub your hands together as fast as you can.
Rub your hands together as fast as you can.
When you ______________________________ a figure, you break it into parts.
decompose
What is true about some sounds?
You can feel them.
You can see them.
You can feel them.
Sound happens when an object _____________________.
vibrates
Earth gets most of its light and _____________________ from the Sun.
heat
4 x 2 + 4 x 3
4 x 2 + 4 x 3
8 + 12
20
What energy does charging a phone use?
electricity
What energy does rubbing two sticks together to make a fire make?
heat energy
TRUE or FALSE
Batteries are like tiny storage containers for electricity.
TRUE
Things work and change because of _____________________.
energy
Wires carry _____________________ to our homes.
electricity
TRUE or FALSE
The speed of the vibrations makes high sounds different from low sounds.
TRUE
All sounds have a high or low _____________________.
pitch
What energy does a flashlight make?
light energy
5 x 2 + 5 x 4
5 x 2 + 5 x 4
10 + 20
30
A __________________________________ is made up of two or more figures.
composite figure
____________________________________ are used to measure area. (cm², m², in ², ft²)
square units
The __________________________________ of a figure is the amount of surface area inside the figure.
area