2e. Sci Yr4 Theme2 Energy Forces Rev2(e)

Energy comes from different sources. What is the most important source of energy for the earth?

Energy can change from one to another. ______________ use the sun’s energy to make food, they change light energy from the Sun to energy that stored in food.

__________ change light energy to electrical energy.

_______________ change stored energy to electrical energy.

Wind turbine change movement energy from the wind to __________.

Electrical fans change electrical energy to _______________.

Heat source can be obtained from friction, burning and electricity but the __________ is the main source of heat.

_______________ is a measure of how hot or cold something is.

Hot objects have have high temperature and cold objects have low temperature. Temperature is commonly measured in _____________.

What instrument do we use to measure temperature?

The boiling point of water is 100 °C, and the freezing point of water is ___________ °C.

Clinical thermometers is used for to measure body temperature. What are the average living human body temperature?

Heat always flow from a hotter to a colder region.

Which pin or thumb tax will be released first? Is it A, B or C?

Fill in the Blank with the Correct Answer