# Lewis Howard Latimer

This lesson looks at the work of Lewis Howard Latimer and his invention of the carbon filament light bulb. We will also compare different light bulbs and write analytically

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

## Question 6

Q1.Select the correct equation for ohm's law (where 'x' represents multiply and '/' represents divide).

1/6

Q2.A bulb has a current of 3.2 A and a resistance of 4 Ω. What is the potential difference? Give your answer to 2 significant figures

2/6

Q3.Select the factors that INCREASE resistance in a wire (Tick 3 boxes)

Select three (3) boxes

3/6

Q4.A student wants to measure how temperature affects resistance of a wire. Identify the independent variable.

4/6

Q5.A student wants to measure how temperature affects resistance of a wire. Identify the dependent variable.

5/6

Q6.A student wants to measure how temperature affects resistance of a wire. Identify a control variable.

6/6

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

## Question 6

Q1.Select the correct equation for ohm's law (where 'x' represents multiply and '/' represents divide).

1/6

Q2.A bulb has a current of 3.2 A and a resistance of 4 Ω. What is the potential difference? Give your answer to 2 significant figures

2/6

Q3.Select the factors that INCREASE resistance in a wire (Tick 3 boxes)

Select three (3) boxes

3/6

Q4.A student wants to measure how temperature affects resistance of a wire. Identify the independent variable.

4/6

Q5.A student wants to measure how temperature affects resistance of a wire. Identify the dependent variable.

5/6

Q6.A student wants to measure how temperature affects resistance of a wire. Identify a control variable.

6/6

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# Lewis Howard Latimer

This will assess your understanding of the knowledge gained in this lesson so far and your prior knowledge.

## Question 6

Q1.Match the circuit symbol with the correct label
A
B
C
D
E
F
G

1/5

Q2.Select the correct statements about series and parallel circuits below (tick 4 boxes)

Select four (4) boxes

2/5

Q3.What is Lewis Howard Latimer most famous for inventing?

3/5

Q4.Why was Latimer's carbon filament bulb better than Edison's paper filament bulb?

4/5

Q5.Select the advantages of LED bulbs over filament bulbs (tick 2 boxes)

Select two (2) boxes

5/5

Quiz:

# Lewis Howard Latimer

This will assess your understanding of the knowledge gained in this lesson so far and your prior knowledge.

## Question 6

Q1.Match the circuit symbol with the correct label
A
B
C
D
E
F
G

1/5

Q2.Select the correct statements about series and parallel circuits below (tick 4 boxes)

Select four (4) boxes

2/5

Q3.What is Lewis Howard Latimer most famous for inventing?

3/5

Q4.Why was Latimer's carbon filament bulb better than Edison's paper filament bulb?

4/5

Q5.Select the advantages of LED bulbs over filament bulbs (tick 2 boxes)

Select two (2) boxes

5/5

# Lesson summary: Lewis Howard Latimer

### Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga

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