NS6_06_We_use_energy

Electricity

Magnetism

What Is energy?

CREATING VIDEOGAMES

We use energy

Types of energy sources

Do we use energy responsibly?

Energy and motion

What Is energy?

Energy and its characteristics

Energy transformation

Energy transforms from one form into another via different processes.

Energy forms

Kinetic energy

Light energy

Electrical energy

Chemical energy

Thermal energy

Nuclear energy

Electricity

What is electricity?

Different materials and electric current

We can classify materials into two types, depending on how they react to an electric current.

Matter can gain an electric charge in specific circumstances. Objects can have a positive charge or a negative charge. Objects with opposite charges (positive and negative) attract each other. Objects with the same charge (negative and negative, or positive and positive) repel each other.

Insulating materials

Conductive materials

Electric current

Electricians use these electrical symbols:

An electric circuit has got these parts:

Magnetism

Magnets

Electromagnet

Magnets and their uses

Electricity and magnetism are related. If we wrap a conductive wire around an iron rod and send an electric current through the wire, the rod can attract metallic objects. It becomes an electromagnet.

Magnets are useful in everyday life. There are decorative magnets for fridges, magnetic games, magnetic paperclip holders, etc. We also use magnets to store information on computers and in the magnetic strips on bank cards. The Earth is a giant magnet because of the iron in its core. The Earth‘s magnetic north pole is very close to its geographic north pole.

Magnetism

Energy sources

Humans get energy from energy sources. An energy source is anything in nature that humans use to get energy. These sources can be renewable or non-renewable.

Non-renewable energy sources

Renewable energy sources

A non-renewable energy source can run out if we use it too quickly. Nature needs time to replenish it.

Renewable energy sources do not run out. They are abundant or nature replenishes them quickly.

Do we use energy responsibly?

Problems caused by energy use

Sustainable energy use

To use energy resources sustainably, we need to:

Using energy sustainably

Sustainability means meeting our needs today without harming nature or others. It also means meeting our needs without compromising those of future generations. One of the best ways to use energy sustainably is to reduce the amount of energy you consume.

Energy and motion

Friction

Friction is the resistance of the environment (air, water, the Earth‘s surface) against the forward motion of an object. It is a force that makes vehicles lose energy and speed.

Air vehicles

Aquatic vehicles

Land vehicles

CREATING VIDEOGAMES 1

Making a video game, step by step

My video game

What do I need to do? You will expand your story about Luz and Canelo. In the story, Luz and Canelo have a conversation. Canelo asks Luz a question. Luz can give two possible answers. If Luz gives the right answer, she gets a surprise (a video game). If she gives the wrong answer, Canelo says ‘Oh no!’ and the story starts again. You are going to add more questions and more possible answers. If Luz gets the questions right, her surprise can be the video game you programmed last year (Saving animals) or two new video games. You are going to program them now.

CREATING VIDEOGAMES 2

The ‘Finding animals’ game