Science Electric Circuits and Magnetism Quiz

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Questions and Answers

What are the primary reasons that might cause a bulb not to glow?

The power supply is not connected to the socket. (correct)
The bulb is only connected to a series of resistors.
There is a break in the electrical circuit. (correct)
The bulb is made of glass without any electrical components.

How many poles does a magnet contain, and what are they called?

One pole - the North pole.
Two poles - the North and South poles. (correct)
Three poles - the North, South, and West poles.
Four poles - the North, South, East, and West poles.

What is one of the symptoms of scurvy, which results from a deficiency?

Increased hair loss.
Bleeding gums and weakness. (correct)
High blood pressure.
Severe headaches and migraines.

Why do electricians wear rubber gloves when working on electric switches?

To prevent electric shock. (A) Signup and view all the answers

Which of the following food materials is considered a good source of calcium?

Dairy products and fish. (A) Signup and view all the answers

Which of the following is a symptom of scurvy?

Bleeding gums (C) Signup and view all the answers

Which of the following is an example of a conductor?

Copper (A) Signup and view all the answers

What is the main reason a bulb might not glow?

All of the above (D) Signup and view all the answers

How does a magnet lose its magnetic property?

All of the above (D) Signup and view all the answers

Why does an electrician use rubber gloves while repairing an electric switch?

To insulate themselves from electric shock (D) Signup and view all the answers

What is the term used to describe a combination of one or more cells in an electrical context?

Circuit (B) Signup and view all the answers

Which group of materials is not classified as an insulator?

Sewing needle, pin, coin (D) Signup and view all the answers

What occurs when both terminals of a cell are connected through a wire?

Efficiency of cell increases (D) Signup and view all the answers

If a bar magnet is cut into two pieces, what happens to the magnetic poles of each piece?

Both pieces will have two new poles, one north and one south. (A) Signup and view all the answers

What components are essential within a seed for a new plant to grow?

Embryo, energy storage, protective coat (C) Signup and view all the answers

Which of the following is a way to keep a magnet safe from damage?

Storing it in a cool, dry place away from other magnets. (A) Signup and view all the answers

Which of the following is most likely to provide direct electrical connection in a circuit?

Conductor (D) Signup and view all the answers

Which of the following is NOT a correct pairing based on the information provided?

Copper sulphate solution - Blue black colour with tincture iodine (B) Signup and view all the answers

What type of energy conversion is NOT mentioned as occurring in an electric cell?

Chemical energy to mechanical energy (D) Signup and view all the answers

Which method is NOT recommended for preparing bean seeds for germination?

Leave them on a dry window (A), Plant them upside down (C) Signup and view all the answers

What is the process through which new plants arise from seeds?

Germination (B) Signup and view all the answers

Which part of the plant is responsible for seed formation?

Flower (C) Signup and view all the answers

How can seeds disperse from their parent plant?

Through wind or animal interactions (B) Signup and view all the answers

What is a disadvantage of burying bean seeds too deep in the soil?

It prevents sunlight from reaching the seeds (C) Signup and view all the answers

What is the primary function of the seed coat?

To protect the seed from environmental damage (B), To aid in the dispersal of the seed (D) Signup and view all the answers

Which of these options best describes the role of sunlight in seed germination?

Sunlight provides energy for the embryo to grow (C) Signup and view all the answers

Why would a seed with a smooth, round shape be less likely to disperse by wind than a seed with a feathery appendage?

A smooth, round seed would not experience as much drag from the wind, limiting its ability to fly (C) Signup and view all the answers

Consider a seed with a sticky outer coat. What is the most likely dispersal method for this seed?

Animal dispersal (B) Signup and view all the answers

Why is a seed with a juicy, fleshy fruit more likely to be dispersed by animals than by wind?

The fruit provides sustenance to animals, which then disperse the seed (A), The fleshy fruit makes the seed more attractive to animals, leading to dispersal (C) Signup and view all the answers

Flashcards

Deficiency diseases

Health issues caused by lack of essential nutrients.

Functions of water in the body

Water helps in digestion, temperature regulation, and nutrient transport.