ГДЗ до сторінки 90 - Англійська мова 8 клас Стайрінг, Тімз, Робінсон

Приклад усних відповідей (Example oral answers):

1. Are you more into science or arts? Why?
   I think I'm more into science. I really like physics and chemistry because I find it interesting to learn how the world works. I like experiments, like the ones on this page. Arts are OK, but for me, science is more exciting. (Я думаю, я більше схильний до науки. Мені дуже подобається фізика та хімія, тому що мені цікаво дізнаватися, як працює світ. Мені подобаються експерименти, як-от ті, що на цій сторінці. Мистецтво - це нормально, але для мене наука більш захоплююча.)
2. What scientific experiments have you done at school?
   In chemistry, we have mixed different chemicals to see the reaction. For example, we mixed an acid and an alkali. In physics, we have done experiments with electricity, making a simple circuit with a battery and a light bulb. (На уроках хімії ми змішували різні хімікати, щоб побачити реакцію. Наприклад, ми змішували кислоту та луг. На уроках фізики ми проводили експерименти з електрикою, створюючи просте коло з батарейкою та лампочкою.)

Experiment 1: MOVING A CAN WITHOUT TOUCHING IT
(Words: blow, rub, tie)

• a. Blow air into the balloon and tie the end.
• b. (Це 'tie' з пункту 'a')
• c. Rub the filled balloon on your hair or on a tissue.

Experiment 2: KEEPING LIQUIDS APART
(Words: cover, fill, stir)

• d. Fill the glasses with water.
• e. ...put two large spoons of salt into the first glass and stir it.
• f. Cover the glass of coloured water with the cardboard/plastic.

Experiment 3: GETTING AN EGG INTO A BOTTLE
(Words: boil, pour, shake, wrap)

• g. Boil the egg for 4 minutes...
• h. ...pour the hot water into the bottle. Put on the lid, wrap it in a towel...
• i. ...and shake it well.
• j. Take off the lid and pour out the water.

HOW IT WORKS (MOVING A CAN)

The can moves towards the balloon because when you rub the balloon, it gets a negative ¹electricity / electrical charge. When you put the balloon near the can, the ²electricity / metal in the can gets a small positive charge. The result is that the ³static / electric air in the balloon attracts the can.

HOW IT WORKS (KEEPING LIQUIDS APART)

The coloured water and the salty water stay apart because salt water is ⁴heavier / lighter than ⁵normal / warm water. The heavier water stays at the bottom of the glass and the ⁶heavier / lighter coloured water 'floats' at the top.

HOW IT WORKS (GETTING AN EGG INTO A BOTTLE)

The egg is pulled into the bottle because the hot water in the bottle makes the bottle ⁷smaller / warmer, and the air in the bottle gets warm too. Hot air expands: it gets ⁸bigger / larger and takes up more space than ⁹cold / hot air. Cold air contracts, in other words it gets smaller and takes up less space than warm air. So as the air in the bottle goes back to room temperature, it gets ¹⁰smaller / warmer, and so it pulls the egg into the bottle.