Grade 4 NS & Tech QUIZ 2 (MLU25TH)

which of these shapes will lose its shape (collapse) when you press on the corner.

• Square

• Triangle

which shape do you think is the strongest?

• Triangle
• Square

The are 5 struts making up the following figure. Name the five struts.

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Answer explanation

2 Horizontal struts (top and bottom)

2 vertical struts ( left and right)

1 diagonal from corner to corner.

What is the weakest shape among the following?

• Triangle

• Square

Which shape has the most stable structure?

• Square

• Triangle

What part of the human body is also a frame structure.

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Answer explanation

The skeleton.

Identify Materials used in Igloo homes.

• Bricks and mortar
• Wood and metal
• Straw and mud
• Blocks of compacted snow or ice

Identify Materials used to build a Xhosa rondavel.

• Sand, soil and mud; cow dung, wooden poles, stone and thatch.

• Steel beams and glass panels
• Brick walls and shingle roof
• Concrete blocks and metal roof

Identify Materials used to build a zulu hut.

• Bricks, aluminum, and plastic
• Marble, copper, and asphalt
• thatch, cow dung, and wooden poles are commonly used to build Zulu huts.

• Concrete, steel, and glass

Name three methods used to strengthen material.

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Answer explanation

Triangulation

Tubing

Folding