science Quiz Grade 7

Grade 7

Welcome to Science Quiz-2025 !

CLANS

Macarthur

Lamont

Boyd

Anderson

VII -C

VII -C

Name Class /section Clan

VII -D

7.

VII -F

6.

VII -D

5.

VII -F

4.

VII -F

3. i

VII -E

2.

8.

NAMES OF THE PARTICIPANTS

1.

Famous scientific personalities with their discoveries and inventions

Common scientific concepts and phenomena

Environmental and global awareness

General and conceptual knowledge

Topics of the competition

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

ROUND- I

• CONCEPTUAL QUESTION SEGMENT

MCQ SEGMENT

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

QUESTION FOR TEAM -I

19Hz

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

QUESTION FOR TEAM -II

• its magnitude and direction

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

QUESTION FOR TEAM -III

• on different bodies

The sun gives off ______ energy.

• Mechanical
• electrical
• radiant
• None of the above

QUESTION FOR TEAM -IV

radiant

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

QUESTION FOR TEAM -I

• Space shuttle

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

QUESTION FOR TEAM -II

1998

• Venus • Mars • Neptune •Jupiter

QUESTION FOR TEAM -III

To which rocky planet are scientists planning a manned space mission

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

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

QUESTION FOR TEAM -I

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.

Answer -

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

QUESTION FOR TEAM -II

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.

Skeletal System

Endocrine System

Circulatory System

Nervous System

Which is the second brain of our body?

QUESTION FOR TEAM -I

Nervous System

Answer -

Femur

Clavicle

Humerus

Scapula

Which is the body largest bone located?

QUESTION FOR TEAM -II

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

Answer -

Dentine

Femur

Temporal bone

Tooth Enamel

QUESTION FOR TEAM -III

Which is the hardest substance in human body?

Answer -

Tooth Enamel

None

Blood Platelets

WBC's

RBC's

QUESTION FOR TEAM -IV

Which of the following contain Haemoglobin?

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.

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

INSTRUCTIONS:

ROUND II

start

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

Joshua Rumble

satyendra Nath Bose

Hiram Walker

Sir Chandrasekhar Venkata Raman

QUESTION FOR TEAM-I

Answer- Sir Chandrasekhar Venkata Raman

What did JAMES WATT discovered?

Steam Engine

Hot Air Balloon

Steam Boat

Diving Bell

QUESTION FOR TEAM-II

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”

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

Henry Ford

John Eccles

Thomas Edison

Leonhard Euler

QUESTION FOR TEAM-III

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.

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

Meghnad Saha

Srinivasa Ramanujan

Aryabhata

Jagadish Chandra Bose

QUESTION FOR TEAM-IV

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.

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

QUESTION FOR TEAM-I

Aristotle

Answer-

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

QUESTION FOR TEAM-II

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.

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.

QUESTION FOR TEAM-III

Answer-

Sir Isaac Newton

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

QUESTION FOR TEAM-IV

Answer-

Alexander Graham Bell

RIDDLES/PUZZLES

ROUND III

All the best

ready ?

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

QUESTION FOR TEAM-I

Plate

ANSWER-

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

QUESTION FOR TEAM-II

Your Voice

ANSWER-

What word in the dictionary is spelled wrong?

QUESTION FOR TEAM-III

wrong

ANSWER-

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

QUESTION FOR TEAM-IV

The letter 'e'

ANSWER-

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.

QUESTION FOR TEAM-I

ANSWER-

What is full of holes but still holds water?

QUESTION FOR TEAM-II

A Sponge

ANSWER-

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?

QUESTION FOR TEAM-III

Candle

ANSWER-

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

QUESTION FOR TEAM-IV

Charcoal

ANSWER-

ROUND IV

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

BUZZER ROUND

What is the hardest natural substance on Earth?

Questions-1

Where in the body the smallest bone is found?

Questions-2

Question-3

Artery carrying carbon dioxide rich blood

Questions-4

Worlds water day is celebrated on ?

Name the animal with the largest heart.

Questions-5

What is the unit of Heat ?

Questions-6

The rod shaped bacteria are called?

Questions-7

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

Questions-8

Questions-9

What is the largest organ in the human body?

What was the name of the first ever space shuttle?

Questions-10

Tie- braker

Name of the inorganic acid that contains carbon.

Questions

Where in the body does most of digestion takes place?

Questions

¡THANK-YOU!