Antonímia

Antonímia El significat dels mots

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…

Calculate. Pressure

Calculate the pressure exerted on the floor a box of mass 150 kg whose base has an area of ​​3 m2: P = Pa

Check. Renewable sources of energy

Remember what you have studied in this section and answer the questions: Ask a classmate to define panel, crop, blade, dam and harness. Give two different uses of solar energy. Describe how geothermal…

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…

Think about it. Light and colours

Remember what you have studied in this section and answer the questions: Why is snow white, coal black and grass green? → ...is... because it reflects... and absorbs... If light from the Sun can be…

La música medieval: de la monodia a la polifonía

Ejercicios: figuras agrupadas

Ejercicios: figuras agrupadas La música en el mundo: Asia