1 Complete the sentences with the present perfect, past perfect or future perfect form of the verbs in brackets. 1Electricity is a force of nature and (be) around us since the creation of universe. (write). 2 At last he showed me the letter he 3 Next year I (know) John for 20 years. (begin) 4 By the time we got to the cinema, the film already 2 points 2 Put the words in the correct order to make statements (1-2) or questions (3-4). 1 passed/because/hard/exams/They/they/had/their/studied/. 2 nights/have/properly/I/for/three/not/slept/. 3 project/by/have/Will/end/this/finished/you/the/of/the/month? 4 you/Have/camera/yet/new/photos/with/any/taken/your? 2 points 3 Complete the sentences with the correct form of the words below. criterion phenomenon formula crisis of electricity and magnetism. 1 William Gilbert studied both the Nature provides an important model to find solutions to the ecological 2 3 What are used for assessing a student's ability? 4 A is an equation that shows how one amount depends on one or more other amounts. 2 points 4 Match definitions 1-4 with the terms a)-d) The capacity of an electric field to do work on an electric charge a) battery typically measured in volts 2 An influence produced by an electric charge on other charges in b) electric potential its vicinity. d) electric field 3 A type of electric current that changes direction periodically during the cycle e) alternating current 4 A chemical device designed to create the force needed to move electrons 2 points 5 Think of one of the famous scientists who made discoveries or inventions of great value to the field electricity and write four sentences about that scientist. переведи

1. Заполните предложения правильной формой глаголов в Present Perfect, Past Perfect или Future Perfect.

2. Electricity is a force of nature and has been (be) around us since the creation of the universe.

3. At last, he showed me the letter he had written (write).

4. Next year, I will have known (know) John for 20 years.

5. By the time we got to the cinema, the film already had begun (begin).

2. Поставьте слова в правильном порядке, чтобы составить утверждения (1-2) или вопросы (3-4).

3. They had studied hard because they passed their exams.

4. I have not slept properly for three nights.

5. Will you have finished the project by the end of the month?

6. Have you taken any photos with your new camera yet?

3. Заполните предложения правильной формой слов.

4. William Gilbert studied both the phenomenon of electricity and magnetism.

5. Nature provides an important model to find solutions to the ecological crisis.

6. What are criteria used for assessing a student's ability?

7. A formula is an equation that shows how one amount depends on one or more other amounts.

4. Соотнесите определения 1-4 с терминами a)-d).

5. The capacity of an electric field to do work on an electric charge – b) electric potential.

6. An influence produced by an electric charge on other charges in its vicinity – d) electric field.

7. A type of electric current that changes direction periodically during the cycle – e) alternating current.

8. A chemical device designed to create the force needed to move electrons – a) battery.

5. Подумайте о каком-нибудь известном ученом, который сделал открытия или изобретения высокой ценности в области электричества, и напишите четыре предложения об этом ученом.

Один из известных ученых в области электричества — Томас Эдисон. Он изобрел лампу накаливания, что значительно изменило способ освещения домов и улиц. Эдисон также работал над развитием электростанций, чтобы сделать электричество доступным для широкой публики. Его изобретения и инновации положили начало современному электрическому освещению и энергоснабжению.