Evalúa lo que sabes

Evalúa lo que sabes El signo

El teatro en el Barroco. El Neoclasicismo

La literatura española en el siglo XIX

Final Autoevaluation 1.02 - Plant nutrition

J. van Helmont's experiment Van Helmont (1577-1644), a Flemish doctor and chemist, thought that in addition to water, air and substances in soil, other elements must be necessary for plant…

Think about it. The responses of plants

Remember what you have studied in this section and answer the questions: Discuss whether a plant would respond to light if the tips of the stem were cut off. Explain why poinsettias are typical…

Complete. Concept map

Complete the concept map:

Motion

A moving object is any object which changes position over time. 1.1. The trajectory of motion A trajectory is a line which connects the different positions occupied by a moving object (figure 1). A…

Ways to save energy

Look at the pictures and answer the questions. Which of these measures do you apply? Which do you think are the most useful?

True/False. Heat

Answer true or false Heat is the energy transferred from hot bodies to cold bodies. Heat also is sometimes called thermal energy. Cold bodies give cold to hold bodies. Hot bodies have less internal…

True/False. Photographic camera

Answer true or false: The diaphragm regulates the passage of light. The objective lens is convergent. The objective lens consists of three or more lenses. The image formed within the chamber is larger…