NATURAL SCIENCES 27-03-2020
Good Morning!
Let's check your activities of 25-03-2020
ANSWER KEY QUIZ (25-03-2020) You can listen to the QUIZ 20 once again.
1. True
2. False. The centre of the Earth is made of liquid iron.
3. True
4. False. The compass needle is made of steel.
ANSWER KEY exercise 2 page 29
1. Electric current produces a magnetic field, thermal energy and chemical reactions.
2. We can use the thermal effect of electricity to cook, heat water, dry our hair, toast bread....(Your examples can be different)
3. Electrolysis is a chemical reaction caused by an electric current that flows through a liquid solution of charged particles.
4. Electrolysis can be used to electroplate metal objects.
________________________________________________________________________________
Activities 27-03-2020
1. Do this Quiz and check your learning. Listen and write a) or b). Click →Audio Quiz 22
Write in your notebook:
1.
2.
3.
4.
5.
2. You already know that electricity produces a magnetic field.
This effect of electricity was used to invent a lot of electromagnetic artefacts that we use every day: headphones, computers, microphones, speakers...
Open your book on page 30 and read how some of these electromagnetic inventions work.
3.Complete activity 2 on page 31
If you want to learn how to build a maglev (magnetic levitation) train at home watch this video:
Let's check your activities of 25-03-2020
ANSWER KEY QUIZ (25-03-2020) You can listen to the QUIZ 20 once again.
1. True
2. False. The centre of the Earth is made of liquid iron.
3. True
4. False. The compass needle is made of steel.
ANSWER KEY exercise 2 page 29
1. Electric current produces a magnetic field, thermal energy and chemical reactions.
2. We can use the thermal effect of electricity to cook, heat water, dry our hair, toast bread....(Your examples can be different)
3. Electrolysis is a chemical reaction caused by an electric current that flows through a liquid solution of charged particles.
4. Electrolysis can be used to electroplate metal objects.
________________________________________________________________________________
Activities 27-03-2020
1. Do this Quiz and check your learning. Listen and write a) or b). Click →Audio Quiz 22
Write in your notebook:
1.
2.
3.
4.
5.
2. You already know that electricity produces a magnetic field.
This effect of electricity was used to invent a lot of electromagnetic artefacts that we use every day: headphones, computers, microphones, speakers...
Open your book on page 30 and read how some of these electromagnetic inventions work.
If you want to learn how to build a maglev (magnetic levitation) train at home watch this video:
HAVE A NICE WEEKEND!
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