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Year 8 Unit 3 Quiz

Last updated 3 months ago

26 Nsɛmmisa

1

1

1

1

1

1

1

1

1

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2.

How does the diagram show this?

1

1

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4.

How do the diagrams show this?

1

1

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6.

Estimate the maximum time a person could listen to a sound of 87 decibels.

1

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8.

Give one way in which our ears can be damaged by sound.

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9.

Some people work in environments where it is extremely loud. Suggest one way in which their employers might use to help them protect their ears.

1

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10.

Name the hazard symbol

1

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12.

Handling concentrated acid in the lab can be very dangerous. What measure could be taken to reduce the risk linked with handling concentrated acid?

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1

1

1

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1

1

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19.

Type the missing word here

1

1

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22.

Penicillins are a group of antibacterial drugs that attack a wide range of bacteria. They were the first drugs of this type that doctors used. Which scientist is largely linked to the discovery of penicillin?

Asemmisa {{asɛmmisaAhyɛnsode}}

23.

Outline how penicillin was discovered by the scientist you named above

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24.

How do vaccines help the body's natural defences against viruses?

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25.

What do you understand by the term ‘phagocytosis’?

1

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26.

Give the name of one type of microorganism which can infect a cut.

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1.

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3.

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5.

Describe how the sound that Shuli hears changes between X and Y.

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7.

Explain why sound cannot travel through a vacuum.

Asemmisa {{asɛmmisaAhyɛnsode}}

11.

Name the hazard symbol

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13.

Asemmisa {{asɛmmisaAhyɛnsode}}

14.

Asemmisa {{asɛmmisaAhyɛnsode}}

15.

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16.

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17.

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18.

Asemmisa {{asɛmmisaAhyɛnsode}}

20.

Type the missing word here

Asemmisa {{asɛmmisaAhyɛnsode}}

21.

Type the missing word here

Which two letters have the same loundness?

A

B

C

Which two waves have the same pitch?

A

B

C

Orange juice

Acidic

Neutral

Alkaline

Egg white

Acidic

Neutral

Alkaline

Oven cleaner

Acidic

Neutral

Alkaline

Milk

Acidic

Neutral

Alkaline

Which substance is the most alkaline

orange juice

egg white

oven cleaner

milk

Equal amounts of egg white and milk are mixed. What is the most likely pH of the mixture?

pH 2

pH 6

pH 7

pH 14