science Quiz Grade 7

Welcome to Science Quiz-2025 !

Grade 7

CLANS

NAMES OF THE PARTICIPANTS

Name Class /section Clan

VII -E

1.

Anderson

VII -F

2.

VII -F

3. i

Boyd

4.

VII -D

VII -F

5.

Lamont

VII -D

6.

7.

VII -C

Macarthur

8.

VII -C

Topics of the competition

General and conceptual knowledge

Environmental and global awareness

Common scientific concepts and phenomena

Famous scientific personalities with their discoveries and inventions

ROUND- I

• CONCEPTUAL QUESTION SEGMENT

• MCQ SEGMENT

Instructions:

• No negative marking
• No passing of the question
• 4 questions per clan

• 5 marks for each correct answer
• 10 seconds for answering

MCQ SEGMENT

QUESTION FOR TEAM -I

The sound frequency not audible to human ears is • 300Hz • 19Hz • 100Hz • 30Hz

19Hz

QUESTION FOR TEAM -II

A force can be completely described by • neither its magnitude nor its direction • its magnitude and direction • its direction • its magnitude

• its magnitude and direction

QUESTION FOR TEAM -III

Action-reaction forces act • on different bodies • in the same direction • on the same body • along different lines

• on different bodies

QUESTION FOR TEAM -IV

The sun gives off ______ energy.

• Mechanical
• electrical
• radiant
• None of the above

radiant

QUESTION FOR TEAM -I

What is designed and built to transport people and cargo between Earth and space? • Space rocket • Space shuttle • Space probe • telescope

• Space shuttle

QUESTION FOR TEAM -II

The International Space Station began in • 1988 •1998 • 2000 • 1968

1998

QUESTION FOR TEAM -III

To which rocky planet are scientists planning a manned space mission

• Venus • Mars • Neptune •Jupiter

Mars

QUESTION FOR TEAM -IV

What object is launched into orbit and designed to send and receive information? 1. Rover 2. Satellite 3. Space shuttle 4. Space probe

Satellite

b)Conceptual question segment

QUESTION FOR TEAM -I

When we drink soft drinks through a straw, why does the liquid go up into our mouth?—scientific reasoning

Answer -

When a person sucks air from the straw, the pressure of the air inside the straw is reduced as compared to the atmospheric pressure acting on the surface of the liquid. Therefore, the soft drink rushes up into the straw and to the mouth.

QUESTION FOR TEAM -II

When a moving train slows down quickly, will a passenger tend to fall backward or forward? Explain why?

Answer -

When a train suddenly starts, the passengers tend to fall backwards. This is because the lower part of the body, which is in contact with the train, begins to move while the upper part of the body tends to maintain its position of rest. As a result, the upper part tends to fall backwards.

QUESTION FOR TEAM -III

During dry weather, clothes made of synthetic fibre often stick to the skin. Which type of force is responsible for this phenomenon?

Answer -

The electrostatic force begins to work between the synthetic fibre cloth and the skin.

QUESTION FOR TEAM -IV

Asbestos sheets are used to make roof sheds. Why?

Answer-

Asbestos sheets are used as a construction material because it is good insulators that keep the building warm in winter and cold in summer.Moreover asbestos also provides fire, noise, and water insulation.

QUESTION FOR TEAM -I

Which is the second brain of our body?

Endocrine System

Nervous System

Skeletal System

Circulatory System

Answer -

Nervous System

QUESTION FOR TEAM -II

Which is the body largest bone located?

Clavicle

Femur

Humerus

Scapula

Answer -

The largest bone found in the body is femur in the leg .

QUESTION FOR TEAM -III

Which is the hardest substance in human body?

Femur

Dentine

Tooth Enamel

Temporal bone

Answer -

Tooth Enamel

QUESTION FOR TEAM -IV

Which of the following contain Haemoglobin?

Blood Platelets

RBC's

WBC's

None

Answer-

RBC's (Red Blood Cells) Haemoglobin is the protein molecule in red blood cells(RBC) that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.

ROUND II

INSTRUCTIONS:

1. No negative marking2. No passing of questions.3. 2 QUESTIONS per team4. 5 marks for each correct answer.5. 10 seconds for answering.

start

QUESTION FOR TEAM-I

He is an Indian Physicist, was the first to describe and explain in the review nature, in 1928, the experimental observation of the phenomenon in liquids. On 28th February 1928, through his experiments on the scattering of light, he discovered the Raman Effect. He was the recipient of the Nobel Prize for Physics in 1930. Identify him

Sir Chandrasekhar Venkata Raman

Hiram Walker

satyendra Nath Bose

Joshua Rumble

Answer- Sir Chandrasekhar Venkata Raman

QUESTION FOR TEAM-II

What did JAMES WATT discovered?

Diving Bell

Steam Boat

Hot Air Balloon

Steam Engine

Answer-

James Watt was a Scottish inventor, mechanical engineer and chemist most famous for his work on the world's first modern steam engine known as “Watt Steam Engine”and he also invented “Photocopier”

QUESTION FOR TEAM-III

He created world's first industrial research laboratory and credited for the invention of incadescent light bulb and phonograph.Identify

Leonhard Euler

Thomas Edison

John Eccles

Henry Ford

Answer-

Thomas Edison’s first great invention was the tin foil phonograph. While working to improve the efficiency of a telegraph transmitter, he noticed that the tape of the machine gave off a noise that resembled spoken words when played at a high speed. This led him to wonder if he could record a telephone message.

QUESTION FOR TEAM-IV

He was an Indian mathematician and astronomer of the classical age of Indian mathematics and Indian astronomy. He flourished in the Gupta Era created a system of phonemic number notation in which numbers were represented by consonant-vowel monosyllables..Identify

Jagadish Chandra Bose

Aryabhata

Srinivasa Ramanujan

Meghnad Saha

Answer- Aryabhata The major contribution of Aryabhatta was in the field of mathematics. Various trigonometric functions were discovered by him which are very much relevant in modern-day mathematics. Aryabhatta’s invention regarding the value of ‘pi’ eradicates the complications in mathematics.

QUESTION FOR TEAM-I

Biology is the Branch of Science related to the study of life and its processes. Who is known as father of Biology and Zoology? Identify

Answer-

Aristotle

QUESTION FOR TEAM-II

He is the father of modern Science who made fundamental contribution to the science of motion,astronomy,strength of materials and develoment of scientisifc method.Identify

Answer-

Galileo Galilei He invented the thermoscope and various military compasses, and used the telescope for scientific observations of celestial objects. His contributions to observational astronomy include telescopic confirmation of the phases of Venus, observation of the four largest satellites of Jupiter, observation of Saturn's rings, and analysis of lunar craters and sunspots.

QUESTION FOR TEAM-III

He stated that " Everything that goes up comes down" which is a phrase that means things that rise must eventually return to the earth due to gravity.Identify the scientist.

Answer-

Sir Isaac Newton

QUESTION FOR TEAM-IV

He was a Scottish-born inventor, scientist, and engineer who is credited with inventing and patenting the first practical telephone. Identify the scientist.

Answer-

Alexander Graham Bell

ROUND III

RIDDLES/PUZZLES

ready ?

All the best

QUESTION FOR TEAM-I

I am always on the dinner table , but you don't get to eat me. What am I?

ANSWER-

Plate

QUESTION FOR TEAM-II

What can you hear, but not see or touch, even though you control it?

ANSWER-

Your Voice

QUESTION FOR TEAM-III

What word in the dictionary is spelled wrong?

ANSWER-

wrong

QUESTION FOR TEAM-IV

You see me once in June, twice in November, but not at all in May. What am I?

ANSWER-

The letter 'e'

QUESTION FOR TEAM-I

I can be good for you, I can be bad, I can be found all over inside and outside your body. I am microscopic, single-celled and have no nucleus.

ANSWER-

QUESTION FOR TEAM-II

What is full of holes but still holds water?

ANSWER-

A Sponge

QUESTION FOR TEAM-III

My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe. What am I?

ANSWER-

Candle

QUESTION FOR TEAM-IV

What is black when you buy it, red when you use it and gray when you throw it away?

ANSWER-

Charcoal

ROUND IV

BUZZER ROUND

1. 10 QUESTIONS WILL BE ASKED.
2. 5 MARKS FOR EACH CORRECT ANSWER IF THE BUZZER IS HIT FIRST

3. MINUS TWO IF ANSWERED INCORRECT.

Questions-1

What is the hardest natural substance on Earth?

Questions-2

Where in the body the smallest bone is found?

Question-3

Artery carrying carbon dioxide rich blood

Questions-4

Worlds water day is celebrated on ?

Questions-5

Name the animal with the largest heart.

Questions-6

What is the unit of Heat ?

Questions-7

The rod shaped bacteria are called?

Questions-8

A biochemical reaction that usually involves the breakdown of carbohydrates into water or alcohol which is catalysed by enzymes.

Questions-9

What is the largest organ in the human body?

Questions-10

What was the name of the first ever space shuttle?

Tie- braker

Questions

Name of the inorganic acid that contains carbon.

Questions

Where in the body does most of digestion takes place?

¡THANK-YOU!