Science Review

Front

What is a circuit?

Back

A circuit is a closed path through which electric current flows. It consists of a power source, conductors, and a load (like a light bulb).

Front

What type of circuit allows all components to receive the same voltage?

Back

A parallel circuit allows all components to receive the same voltage.

Front

What happens to a water droplet when it is placed on a surface?

Back

The water droplet forms a bead due to surface tension, which is the cohesive force between water molecules.

Front

How can friction be reduced when pushing an object?

Back

Friction can be reduced by using a smoother surface or by using lubricants.

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Front

What is the role of the sun in determining time during the day?

Back

The position of the sun in the sky helps determine the time of day, as it moves from east to west.

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What is light energy?

Back

Light energy is a form of energy that is visible to the human eye and is produced by sources like the sun, light bulbs, and fire.

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What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object, which is used to do work.

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What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter, which is the total kinetic energy of particles in an object.

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Front

What is chemical energy?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like food and fuel.

Front

What is the difference between a series circuit and a parallel circuit?

Back

In a series circuit, components are connected one after another, so the same current flows through all. In a parallel circuit, components are connected across common points, allowing multiple paths for current.