S1 10/1 - Ah, ha, ha, ha, stayin' alive

S1 10/1 - Ah, ha, ha, ha, stayin' alive

7th Grade

5 Qs

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S1 10/1 - Ah, ha, ha, ha, stayin' alive

S1 10/1 - Ah, ha, ha, ha, stayin' alive

Assessment

Quiz

Science

7th Grade

Practice Problem

Medium

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following should we wear to protect our eyes?

closed-toe shoes

gloves

lab coat

safety goggles

Answer explanation

Safety goggles are worn to minimise risk of injury to the eyes.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Mr Yuk, to the right, is a trademarked graphic that informs the presence of a poisonous substance. This new symbol is primarily meant for children as a less abrasive way to demonstrate the hazards of poison.

Which of the following hazard symbols is the most similar in meaning to Mr Yuk?

Media Image
Media Image
Media Image
Media Image

Answer explanation

Media Image

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The hazard symbol below represents oxidising substances.

Oxidising substances release oxygen easily which can cause fire and/or explosion.

Which of the following hazard symbols represent substances which may cause explosions and fire?

A

B

C

D

Answer explanation

Media Image

The risk of causing explosions is associated with explosives.

The risk of fire is associated with flammable substances.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which of the following describes the difference between a luminous flame and a non-luminous flame?

A

B

C

D

Answer explanation

Media Image

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following parts of the Bunsen burner allows us to switch between a luminous flame and a non-luminous flame?

air hole

barrel

base

gas pipe

Answer explanation

Media Image

The air hole allows air to enter the burner. When the air hole is closed by adjusting the collar, a luminous flame is produced and when the air is open, a non-luminous flame is produced.