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Hedy Lamarr was a famous actress in the 1930s and 1940s, during WW2. What many people didn't know is that she was also a scientist and an inventor. She had to keep that secret because it would destroy her acting career.
As a refugee from Hitler's Europe, Lamarr wanted to aid the Allied forces. She explored potential military applications for radio technology. She theorised that varying radio frequencies at irregular intervals would prevent interception or jamming of transmissions, thereby creating an innovative communication system.
Lamarr's concept for “frequency hopping” was adopted by the U.S. Navy.
Although her invention led to wireless communications technologies such as Wi-Fi, GPS and Bluetooth, she received no money for it.
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IQ1. What do scientists use?
IQ1. What do scientists use?
Students:
1.1 explain safety rules for the Science laboratory.
1.2 name, construct scientific drawings, and identify uses of common laboratory equipment.
1.3 use a Bunsen burner safely to heat water.
1.1 You should be able to... explain safety rules for the Science laboratory.
1.1 You should be able to... explain safety rules for the Science laboratory.
Activity 1.1.1 How safe can we be?
Activity 1.1.1 How safe can we be?
Look at the lab around you.
What hazards can you see?
What risk are they to us?
What should we do to keep safe?
Activity 1.1.2
Activity 1.1.2
Complete 1.1 Sponge Bob Safety Rules Play
In groups:
Discuss the safety issues.
Design your lab safety rules.
Activity 1.1.3
Activity 1.1.3
Sign your 1.1 Lab Safety Sheet and paste it into your book. Fold it so that the top is not covered.
(Do this for all worksheets that you attach to your book. This allows you to easily identify the worksheets when you are revising. )
1.2 You should be able to...name, construct scientific drawings, and identify uses of common laboratory equipment.
1.2 You should be able to...name, construct scientific drawings, and identify uses of common laboratory equipment.
Activity 1.2.1 Exploring under the bench
Activity 1.2.1 Exploring under the bench
Look under the bench. Take out each piece of equipment as your teacher shows you.
What is its science name?
What do you think it could be used for?
What hazard can you think it might be?
What risk would that be to us?
What should we do to keep safe when using this equipment?
Activity 1.2.2 Hazards and Risks
Activity 1.2.2 Hazards and Risks
Think/pair/share or Pair/think/share:
What might be some hazards for your safety in the lab?
What might you use to protect yourself?
Identify the Personal Protective Equipment in the lab.
Activity 1.2.3
Activity 1.2.3
Complete the Wordsearch below (or click link)
Activity 1.2.4A
Activity 1.2.4A
4. BAS 1.2 Equipment Worksheet M TPT
Activity 1.2.4B
Activity 1.2.4B
Complete 1.2 Lab Equipment Acrostic Puzzle (TPT3)
You may need to research some items.
2. BAS 1.2 Lab Equipment WS Ext2 TPT 4
Activity 1.2.5
Activity 1.2.5
Complete the Equipment Matching Game https://matchthememory.com/laboratoryequipment : volume off, or wear ear phones.
Activity 1.2.6
Activity 1.2.6
Complete 7.1 BAS 1.2 Equipment Safety WS
1.3 You should be able to...use a Bunsen burner safely to heat water.
1.3 You should be able to...use a Bunsen burner safely to heat water.
Practical 1.3A: Heating water using a Bunsen burner.
Practical 1.3A: Heating water using a Bunsen burner.
(Q: Why do we write the word Bunsen with a capital letter?)
PART A: Work in pairs, we will swap jobs for Part B
Equipment:
Bunsen burner
gauze mat
tripod
250mL beaker
200mL measuring cylinder
1. Collect the equipment as your teacher tells you and place it safely on the bench. Make sure the hole on the Bunsen burner is CLOSED.
2. Person 1 put the gauze mat on the top of the tripod near the gas tap.
3. Person 1 attach the free end of the Bunsen hose to the gas tap. The Bunsen should not be under the tripod.
4. Person 2 turn on the tap and have a slow stream of water.
5. Person 2 fill the measuring cylinder to the 150mL mark. It does not have to be exact for this experiment.
6. Person 2 pour the water into the beaker.
7. Person 2 carefully put the beaker on the tripod in the centre of the gauze mat.
8. Person 2 turn the Bunsen tap to fully on (this is half way around).
9. Person 1 light the Bunsen by bringing the flame up the side from just below the tip. Not from the top or over the top. The flame should be yellow.
10. Person 2 slowly turn the gas tap down until the flame is a size that will just touch the bottom of the gauze when the Bunsen is put under it.
11. Person 1 use the hose near where it joins the Bunsen to carefully push the Bunsen under the tripod to sit in the middle.
12. Person 2 start the stopwatch.
13. Both people carefully watch to make sure the flame does not go out and time the amount of time it takes for the water to bubble completely.
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