Презентація до уроку "Water in Our Life"

Solve the crossword to discover the topic of our conference.https://learningapps.org/display?v=pnwi4rput24

Water in Our Life Chemistry and English lesson-conference

“If there is magic on our planet, it is contained in the water.” Lorence Eisley Match the Key words of the conference to their definitions.https://learningapps.org/display?v=pzfsy9q2v24

What Is Water? Have you ever heard someone refer to water as H2 O? Why do you suppose someone might call water by this name? What is water? Water (chemical formula: H2 O) is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms. As a chemical compound, a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds.

What Is Water?Complete the sentences:1. Water is …2. It is not hard to find water in a desert …3. The amount of water on Earth …4. Water makes up a majority …5. Water is unique because …6. Water carries nutrients to cells and …7. If water became more dense it would …

THE HISTORY OF WATERListen to his report and make up a mind map “Water in the History of Mankind”.

THE HISTORY OF WATERit has effective calming qualitiesthe place for building citiesit is usedin hydrotherapyhot springs and spas can curea symbol of purity and devotion water

Water has really unique calming qualities. Let’s check them. Listen to the sounds of water. Denote them. Speak about your feelings. (Audio “The Sounds of Water”)

Surface Tension of waterhttps://www.youtube.com/watch?v=z. Mzqi. Au. OSz0 Read the statements and decide if they are True or False. 1. Each blue circle represents a molecule of water.2. Due to kinetic energy the particles that make up a liquid are in constant organized motion.3. The attractions of individual molecules on the surface pull on each other in one direction.4. This pull on the molecules is lateral and downward.5. Surface molecules are compressed more tightly together at the surface, forming a sortof skin on the surface.6. Water in particular has a very low surface tension.7. There is strong attraction between the oxygen and hydrogen due to their positive charges.8. The strong partial charges result in a strong attraction between water molecules called oxygen bonding.9.  There are creatures that have evolved to take advantage of water's high surface tension.  

Experiment 1: Take coins of different denominations. Define the number of water drops which can be placed on each coin.

Experiment 2: 1. Take 3 glasses of water. Add some sand into the first one, some salt into the second and soil into the third one.2. Describe the appearance of each solution and the place of each solute.3. In 10 minutes define the changes. Draw conclusions about the solubility of substances based on observations.

Task 1. Answer the questions. 1. How much water does our body contain?2. What does our body looses water for?3. Can such beverages like tea and coffee help promoting hydration?4. What are the signs of dehydration?5. What functions is water involved in?6. How much water do you drink? Is it enough for normal body function?

A Man and Water. Read the doctor’s report “A Man and Water” and check your answers.

Look at the scheme and analyze it. Think if we can become very efficient water users.

Water Users. Answer the questions:1. How much water do we use for drinking and cooking?2. How much water do we use for gardening?3. What amount of water is used for bathing and cleaning? 4. What percent of water do we use for laundry and dishes?5. What can we do to lessen the amount of water we use?

Water Users. Drinking and cooking 4%Garden watering 20%Toilet flushing 32%Bathing and cleaning 28%Laundry and dishes 16%

Water Functions. We drink it. We use it for washing. We clean everything with its help. We use it to produce different goods. It is a habitat for fish, whales and other animals. We enjoy water sports. We relax. It gives us food. It is necessary for all living organisms.

The Problems of Water. Listen to our journalist who prepared a presentation “The Problems of Water”. Make up the list of problems.

Experiment 31. Cut 3 plastic bottles making watering cans and receivers. 2. Put cotton, fabric and pare towel into watering cans.3. Put these cans into receivers. 4. Pour polluted water into to each filter installation. 5. Define which substance is the best filter.

“Children of a culture born in a water-rich environment, we have never really learned how important water is to us.  We understand it, but we do not respect it.” William Ashworth