Energy
Energy is everywhere around us (True / False)
True
The main source of the heat energy is______
The Sun
wave
Light energy transferred _______than sound energy.(faster / slower)
faster
we use _____ to turn on or off the light
switch
Energy can not be destroyed or created, but energy can be _________.
transferred
We can measure the heat using______
Thermometer
When we hit the drum, we transferred _________ energy to__________ energy.
movement to sound
Almost all light comes from......
The Sun
The clock on the wall need __________ to make it work.
Battery
Living things get energy from _________
food
What is conductor ?
A material that allows heat to pass through it easily.
What happened if we hear the loud sound everyday?
Light energy that bounces off objects called___
reflection
Material that does not allow light to pass through it.
opaque
Energy makes things_______ from one place to another place.
move
Mention three sources of heat energy
The Sun, fire, stove, microwave, oven
The loudness or softness of a sound is called ______
volume
Objects that only let some of the light through are___
translucent
What is waste energy?
The energy that is not used in this process
What is waste energy?
The energy that is not used in this process
Why do we need to make campfire when we have a camping? mention 2 benefits
To make our body warm. to cook food. to see surrounding
Sound is energy that is made from
vibration
What will happen when a pencil is placed in glass of water?
A pencil in a glass of water looks broken because light travels more slowly through the water than air.
Draw a chain energy from a lightbulb and mention which are useful energy and waste energy from it
electrical energy to light energy (useful energy) and heat energy(waste energy)