Aprende. Calcular distancias en mapas con diferentes escalas

La escala de un mapa indica cuánto se ha reducido un territorio al representarlo. La escala numérica es una fracción: cuanto mayor es el denominador, mayor es la reducción; se llama mapa a pequeña…

Completa. El sector servicios

Completa estas frases con las palabras que faltan: El es una actividad muy desarrollada dentro del sector en la Comunitat Valenciana. La mayoría de los turistas extranjeros que llegan a la Comunitat…

El arte en el cambio de siglo

Durante las últimas décadas del siglo XIX, el Impresionismo y la audacia de numerosos artistas que siguieron su estela sentaron las bases de la revolución artística de principios del siglo XX. Para…

La comunicación

Reproduction in living things

1.1. Types of reproduction Reproduction in living things ensures that the species will continue. There are two basic types of reproduction: Sexual reproduction takes place when sex cells, known as…

Applications of in vitro cultivation of plants

The most important applications are: Propagating large numbers of plants. Obtaining new hybrids. Cloning plants with desirable characteristics. Producing synthetic seeds. Genetically improving plants,…

Think about it. Coordination systems

Remember what you have studied in this section and answer the questions: When you first learn to do something, you are very slow, but with practice you get faster. With a classmate and then your class,…

Check. Test yourself

Remember what you have studied in this unit and answer the questions: Define ecosphere and biosphere. Note down the differences between them. What are decomposers? Give an example. [...]

Summaries - Matter and its properties

1. Matter Matter is anything which has mass and volume. For example, the Sun, the Earth, and human beings are all made up of matter. A physical system is any part of the Universe which is made up of…

Calculate - End-of-unit activities

Calculate the work done by a person who pushes a wheelbarrow for a distance of 100 m if he exerts a force of 500 N. What is the efficiency of a machine which does 230 J of work but uses 410 J of total energy?