Lesson 11 — 7.4 + 7.5


Period 3
Magnetism
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Period 3
Magnetism

Slide 1 - Tekstslide

This lesson
  • Checking the homework
  •  7.4 Independent variables and dependent variables
  • working independently

Slide 2 - Tekstslide

Learning goals
  •  Explain what is meant by independent and dependent variables
  • Start studying for the test week

Slide 3 - Tekstslide

Checking the homework

Slide 4 - Tekstslide

7.3 — Exercise 1
  • a. False – they have a different shape
  • b. False – aluminium is not magnetic
  • c. True
  • d. True
  • e. False — it will pick up more paper clips
  • f. False — Electromagnets are stronger

Slide 5 - Tekstslide

7.3 — Exercise 2
a. —

b. The compass needles would turn the other way because the magnetic field gets reversed.

Slide 6 - Tekstslide

7.3 — Exercise 3
a. Use the battery as a power source, make a coil out of the copper wire and place the iron name in the center of the coil as it's core

Slide 7 - Tekstslide

Electro magnet schematic

Slide 8 - Tekstslide

7.3 — Exercise 3
b. No, because both steel and iron are magnetic

Slide 9 - Tekstslide

Independent and dependent variables

Slide 10 - Tekstslide

Independent & dependent variables
step 1 — Working independently for 5 minutes
  •  Read 7.4
  • Write down your own explanation of dependent and independent variables
step 2 — Working together
  •  Compare your answers to your neighbours

Slide 11 - Tekstslide

Independent variables
  • This variables is controlled

  •  This variable you make changes to

  • Cause

  • Controlled
Dependent variables 
  • This variable is measured

  • This variable reacts to the changes you make

  • Effect

  • Reacts

Slide 12 - Tekstslide

Slide 13 - Tekstslide

Working independently
The learning material for the test week:
7.1 — 7.4

Slide 14 - Tekstslide

Learning goals
  •  Explain what is meant by independent and dependent variables
  • Start studying for the test week

Slide 15 - Tekstslide