Science and Technology Quiz
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Questions and Answers

What is the formula for calculating work done on an object when a force is applied?

  • W = s/F
  • W = F/s
  • W = F × s × Cos θ (correct)
  • W = F + s

Kinetic energy is defined as the energy possessed by an object due to its motion.

True (A)

What is the SI unit for both work and energy?

joule

The energy which an object has because of its motion is called _____ energy.

<p>kinetic</p> Signup and view all the answers

Match the following forms of energy with their examples:

<p>Mechanical energy = A moving car Heat energy = Hot coffee Chemical energy = Batteries Nuclear energy = Atoms splitting</p> Signup and view all the answers

What is the primary goal of the Science and Technology textbook?

<p>To understand and explain relevant science and technology (A)</p> Signup and view all the answers

Students are encouraged to carry out activities and experiments without taking any precautions.

<p>False (B)</p> Signup and view all the answers

Name one type of activity mentioned in the textbook that stimulates thinking.

<p>Use your brain power!</p> Signup and view all the answers

The textbook encourages the conservation of the __________.

<p>environment</p> Signup and view all the answers

Match the following activity titles with their objectives:

<p>Observe and discuss = Engage in conversation about observations Try this = Conduct a specific experiment Use your brain power! = Stimulate critical thinking Research = Explore deeper into topics</p> Signup and view all the answers

Which of the following is mentioned as a tool to facilitate studying?

<p>Computers and mobile phones (B)</p> Signup and view all the answers

The textbook discourages students from asking for help.

<p>False (B)</p> Signup and view all the answers

What is the primary objective of science education according to the document?

<p>To learn logical thinking about events. (B)</p> Signup and view all the answers

Experimentation is unnecessary for learning observation skills.

<p>False (B)</p> Signup and view all the answers

What are the two activities mentioned that help explain the content of the lesson?

<p>Try this and Let's try this.</p> Signup and view all the answers

The document encourages students to explore their own __________ about the events of the world.

<p>curiosity</p> Signup and view all the answers

Match the following sections with their purpose:

<p>Let's recall = Review previous knowledge Can you tell? = Introduce a new topic Use your brain power! = Apply previous and new knowledge Always remember = Provide important suggestions</p> Signup and view all the answers

Which of the following skills is NOT mentioned as part of science education?

<p>Memorization (D)</p> Signup and view all the answers

The document suggests that students in middle school should limit their curiosity.

<p>False (B)</p> Signup and view all the answers

What is the significance of the two years in middle school as mentioned in the document?

<p>They lay the foundation of higher education in Science.</p> Signup and view all the answers

The document states that it is the duty and responsibility to enhance students' interest in __________.

<p>science</p> Signup and view all the answers

Which term describes the minimum distance between the starting and finishing points?

<p>Displacement (B)</p> Signup and view all the answers

Distance and displacement are the same quantity.

<p>False (B)</p> Signup and view all the answers

What is the formula to calculate speed?

<p>Speed = Distance / Time</p> Signup and view all the answers

The radius of the circular field Swaralee walks around is _____ meters.

<p>100</p> Signup and view all the answers

Match the following terms with their correct definitions:

<p>Distance = The total path length traveled Speed = Distance traveled per unit time Velocity = Speed with a direction Displacement = The shortest distance between two points</p> Signup and view all the answers

If a car travels from point P to Q and then returns to point P, what is the displacement?

<p>0 meters (C)</p> Signup and view all the answers

Speed and velocity are measured in different units.

<p>False (B)</p> Signup and view all the answers

Describe the difference between scalars and vectors.

<p>Scalars have only magnitude while vectors have both magnitude and direction.</p> Signup and view all the answers

Swaralee walks around the edge of a circular field, making her distance traveled equal to _____ meters after one complete round.

<p>628.32</p> Signup and view all the answers

Which of the following quantities is NOT a vector?

<p>Time (D)</p> Signup and view all the answers

What is true about negative acceleration?

<p>The velocity decreases. (D)</p> Signup and view all the answers

Positive acceleration means that the velocity of an object decreases.

<p>False (B)</p> Signup and view all the answers

What is the minimum distance between the start and finish points of an object's motion called?

<p>displacement</p> Signup and view all the answers

Deceleration is __________ acceleration.

<p>negative</p> Signup and view all the answers

Which factor represents non-uniform motion?

<p>An object moves 18 m in the first 3 s, 22 m in the next 3 s. (A)</p> Signup and view all the answers

Match the following scenarios with their descriptions:

<p>A car, initially at rest, reaches a velocity of 50 km/hr in 10 seconds = Positive acceleration A vehicle is moving with a velocity of 25 m/s = Zero acceleration A vehicle moving with the velocity of 10 m/s, stops after 5 seconds = Negative acceleration</p> Signup and view all the answers

Calculate the average speed if an object moves 18 m in 3 s, 22 m in 3 s, and 14 m in the last 3 s.

<p>6 m/s</p> Signup and view all the answers

When an object is in uniform circular motion, its __________ changes at every point.

<p>velocity</p> Signup and view all the answers

If an object of mass 16 kg is moving with an acceleration of 3 m/s², what is the applied force?

<p>48 N (A)</p> Signup and view all the answers

Flashcards

Apply Science To Everyday Life

Connect scientific concepts to real-world situations.

Understand & Explain Science

The ability to understand and explain science and technology to others.

Observe, Discuss, and Experiment

Activities that encourage deeper understanding and active learning.

Can you recall? and Can you tell?

Sections that allow for review and recall of previously covered concepts.

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Use your brain power!, Research, Think about it

Sections designed to stimulate thinking and problem-solving skills.

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Environmental Conservation

Encourages responsible and ethical behavior during experiments involving plants and animals.

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Utilize Technology for Learning

Use technology effectively for learning.

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What is energy?

The capacity of a body to perform work.

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What is kinetic energy?

Energy possessed by an object due to its motion.

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How do you calculate Kinetic Energy?

The work done by a force to displace a stationary object through a distance is the kinetic energy gained by the object. Mathematically, K.E. = F × s.

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How does applying a force to a stationary object relate to kinetic energy?

The initial velocity of a stationary object is 0. The work done by an applied force on an object is equal to the kinetic energy gained by the object.

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Explain the relationship between force, velocity, displacement and kinetic energy?

Initial velocity (u) is 0. Apply a force (F) to accelerate the object. After time (t), the velocity of the object is (v). The displacement during this time is (s).

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Acceleration

The rate at which velocity changes over time.

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Negative Acceleration

Acceleration that causes an object to slow down.

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Positive Acceleration

Acceleration that causes an object to speed up.

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Zero Acceleration

When an object's velocity remains constant over time.

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Distance

The total length of the path traveled by an object.

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Displacement

The shortest straight-line distance between the starting and ending points of an object's motion.

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Uniform Motion

Motion where the object covers equal distances in equal intervals of time.

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Non-Uniform Motion

Motion where the object covers unequal distances in equal intervals of time.

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Centripetal Force

The force acting on an object that causes it to move in a circular path.

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Velocity

The rate at which an object changes its position over time.

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Speed

The distance travelled in unit time.

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Scalars

Quantities that have only magnitude.

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Vectors

Quantities that have both magnitude and direction.

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Scalars: Distance, Speed, Time

Distance, speed, and time are scalar quantities.

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Vectors: Displacement, Velocity

Displacement and velocity are vector quantities.

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Total Distance Travelled

The total distance travelled by an object, regardless of its direction.

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Unit of Speed and Velocity

The units of speed and velocity are the same (m/s or cm/s).

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Objective of Science Education

The goal of science education is to cultivate logical and critical thinking skills.

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Encouraging Student Curiosity

In middle school science, students should be encouraged to be curious, explore causes, and take initiative.

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Importance of Experimentation

Laboratory experiments are vital for developing scientific skills like observation, logic, and data analysis.

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Guidance in Experiments

Students' observations should be accepted and guided to achieve expected results.

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Foundation for Higher Education

Middle school science education lays the foundation for higher scientific learning.

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Developing Creativity & Scientific Temper

Foster creativity and a scientific perspective in students through engaging teaching methods.

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Review and Introduction Techniques

Use "Let's Recall" to review previous knowledge, and "Can You Tell?" to introduce new topics through student participation.

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Activity-Based Learning

Activities like "Try This" and "Let's Try This" help explain the lesson content.

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Applying Knowledge

Use "Use Your Brain Power!" for applying previous knowledge to new concepts.

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Study Notes

Science and Technology Standard Nine

  • This textbook is for Standard Nine students in Maharashtra.
  • A digital version of the textbook is available through the DIKSHA app using a QR code.
  • The QR code on the title page provides additional audio-visual teaching-learning material.
  • The Coordination Committee, GR No. Abhyas - 2116/(Pra.Kra.43/16) SD - 4, dated 25.4.2016, approved the textbook on 3.3.2017.
  • The Maharashtra State Bureau of Textbook Production and Curriculum Research, Pune, is the publisher.
  • The book's first edition was published in 2017, with a reprint in 2020.

Preamble

  • The preamble describes the values of the Indian Constitution.
  • The preamble states that India will be a Sovereign Socialist Secular Democratic Republic to safeguard justice, liberty, equality and fraternity.

National Anthem

  • The text of the National Anthem of India is included
  • The Pledge includes a commitment to India and its people.

Preface

  • The preface is a message to students about the textbook.
  • It encourages students to actively engage in hands-on activities and experiments to better understand the science and technology concepts.
  • The use of technology is encouraged, particularly with devices for information communication technology.
  • It encourages student feedback regarding the textbook

Other Notes

  • The book contains information about different scientific committees and individuals involved in its development.
  • There are various images and diagrams in the book to depict the subject matters.
  • There is content about the National Physical Laboratory, under the authority of the Council of Scientific and Industrial Research.

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Description

Test your knowledge on the fundamental concepts of work, energy, and the principles outlined in the Science and Technology textbook. This quiz includes definitions, matchings, and the primary objectives of science education. See how well you understand the key ideas that drive scientific learning and experimentation.

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