Circuits, Sun and Earth, Water Cycle

Front

What is a circuit?

Back

A circuit is a closed path through which electric current flows.

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow and power devices.

Front

What is an open circuit?

Back

An open circuit is a broken path where electric current cannot flow.

Front

What happens to electrical energy in a circuit?

Back

Electrical energy flows through the circuit and can transform into other forms of energy, like heat or light.

Front

What is the law of conservation of energy?

Back

Energy cannot be created or destroyed; it can only change from one form to another.

Front

Why do we have day and night?

Back

Day and night occur because the Earth rotates on its axis, causing different parts to face the Sun.

Front

What is the role of the Sun in the solar system?

Back

The Sun provides light and heat, which are essential for life on Earth.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Front

What are the main processes of the water cycle?

Back

The main processes are evaporation, condensation, precipitation, and collection.

Front

What is evaporation?

Back

Evaporation is the process where liquid water turns into water vapor due to heat.