ابطال رابعة ابتدائى

Curiosity rover is designed to explore ………………………….

• Earth

• Mars

• Sun

• moon

In the washing machine, the ....................... energy is converted into kinetic and sound energies.

• light

• electrical

• thermal

• potential

Solar water heater changes ………………… energy into................  energy.

• electrical – thermal

• solar - sound

• electrical - sound

• solar-thermal

Greenhouses allow farmers to plant crops that only grow in..........

• polar climate

• warm climate

• absence of sunlight

• absence of water

Using convergent ………......... sheets in cooking food is one of the benefits of using the solar energy.

• paper

• plastic

• mirror

• wooden

The wind movement has …………........ energy which moves the windmill's blades

• kinetic

• solar

• thermal

• potential

Humans used windmills and watermills from hundreds of years ago to ....................

• crushing grains

• generate electricity

• cooking food

• heating water

All the following are considered as nonrenewable energy resources, except …

• coal

• wind

• natural gas

• petroleum

the sun is a star that made up of ........................... gases

• hydrogen - carbon dioxide

• hydrogen - oxygen

• helium - carbon dioxide

• hydrogen - helium

We have to protect rocks of buildings from ..................

• global warming

• oxygen gas

• acid rain

• carbon dioxide gas