Los medios de comunicación

The scientific method - Introduction

5. About the scientific method What method do scientists use to formulate a theory or test a hypothesis? The development of cell theory can be used to explain the stages of scientific inquiry.…

Learn. The different types of respiration - Animal nutrition

Diffusion In unicellular organisms, like the amoeba, respiratory gases are exchanged across the whole surface of the body. These gases then cross the cell membranes by diffusion. Tracheal respiration…

Choose. Receptors

Indicate where these receptors are found in the sense organs: Olfactory cells. Rods and cones. Hair cells. Cells that perceive changes in the position of the head and in balance.

True or false. Earthquakes

Answer true or false: An earthquake last for hours. We feel all earthquakes. Large scale earthquakes can cause huge damage. The hypocentre is the point inside the Earth where the earthquake originates.…

Calculate. Displacement and distance travelled

Look at the diagram and calculate the displacement and total distance travelled in each case d: Displacement d = m. Distance travelled = m. Displacement d = m. Distance travelled = m. Why is…

Learn. Ways to save energy - Obtaining and using energy

Ways to save energy Measures for saving energy are the responsibility of both individuals and society in general. This page shows you some of the ways to save energy. To save energy we must avoid Using…

Identify. Mechanisation

Look at the mind map and complete it with the numbers that represent the missing words:

Check. The war continues (1936-1939)

Remember what you have studied in this section and answer the questions: Make a four-part timeline of the Civil War's main events. What were the long-term consequences of the war on the Spanish…

Check. Spain on the international stage

Remember what you have studied in this unit and answer the questions: What reforms were needed to prepare Spain for entry into the European Economic Community? Describe the process that resulted in the…