Science Grade 10, Quarter 2 Learner's Material
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Questions and Answers

What does the section on 'What I can achieve' primarily encourage?

  • Creating conceptual structures (correct)
  • Disregarding old learnings
  • Memorization of facts
  • Relying solely on textbooks

Which of the following materials is NOT mentioned as supplementary learning resources?

  • Worktexts
  • Radio-based instruction
  • Textbooks
  • Online courses (correct)

What is the primary focus of the first lesson on the electromagnetic spectrum?

  • Learning about the history of electricity
  • Comparing the sizes of different waves
  • Studying magnetism alone
  • Exploring different regions of the electromagnetic spectrum (correct)

Who discovered the relationship between electricity and magnetism through a deflection of a magnetic needle?

<p>Hans Christian Oersted (D)</p> Signup and view all the answers

Which physicist performed experiments based on Oersted's discovery?

<p>Andre-Marie Ampere (B)</p> Signup and view all the answers

What learning delivery modalities are mentioned besides traditional methods?

<p>Radio-based and TV-based instruction (C)</p> Signup and view all the answers

What can be enriched further through K to 12 Learning Materials?

<p>Understanding of Most Essential Learning Competencies (MELCs) (C)</p> Signup and view all the answers

Which of the following is NOT a key figure in the history of electromagnetic theory?

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

Where is the image formed by a convex mirror located?

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

What orientation is the image formed by a concave mirror when the object is positioned between P and F?

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

What is the size of the image formed by a convex mirror?

<p>Smaller than the object (D)</p> Signup and view all the answers

Which type of image is formed by a concave mirror when the object is located beyond F?

<p>Real and inverted (C)</p> Signup and view all the answers

What type of image does a convex mirror always produce?

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

What is true about the size of the image produced by concave mirrors?

<p>It can be smaller or larger depending on the position of the object (D)</p> Signup and view all the answers

What feature characterizes the image formed by a convex mirror?

<p>It is upright (B)</p> Signup and view all the answers

What is the orientation of the image produced by a convex mirror?

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

Which type of electromagnetic wave has the shortest wavelength?

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

Which electromagnetic waves carry the least energy?

<p>Radio waves (A)</p> Signup and view all the answers

What is the primary method of production for radio and TV waves?

<p>Oscillating electricity in an antenna (D)</p> Signup and view all the answers

What is the frequency range for microwaves?

<p>3 x 10^9 to 3 x 10^11 Hz (A)</p> Signup and view all the answers

Which type of wave is characterized by wavelengths comparable to a football field?

<p>Radio waves (A)</p> Signup and view all the answers

Which electromagnetic wave type is primarily used for transmitting sound and picture information over distances?

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

Which electromagnetic wave type has photons with energies exceeding 2 x 10^-14 J?

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

What is the energy range of visible light waves?

<p>3 x 10^-19 to 5 x 10^-19 J (C)</p> Signup and view all the answers

What type of electromagnetic wave is primarily used for radio communication and broadcasting?

<p>Radio waves (C)</p> Signup and view all the answers

What is the role of the microphone in radio broadcasting?

<p>Converts sound waves to audio-frequency signals (C)</p> Signup and view all the answers

In amplitude modulation, what part of the radio wave is changed to match the audio-frequency signal?

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

How does frequency modulation differ from amplitude modulation?

<p>It alters the frequency of the carrier wave (B)</p> Signup and view all the answers

What are very high frequency (VHF) waves known for in broadcasting?

<p>Providing higher quality audio including stereo sound (B)</p> Signup and view all the answers

What is the function of the modulator in radio broadcasting?

<p>To transform audio-frequency and carrier waves into modulated carrier waves (D)</p> Signup and view all the answers

What happens to the modulated carrier wave after the modulation process?

<p>It is amplified to increase its energy (D)</p> Signup and view all the answers

Why are radio waves suitable for long-distance broadcasting?

<p>They have the longest wavelength (C)</p> Signup and view all the answers

What is the primary focus of the 'What I know' stage?

<p>Identifying prior knowledge and interests (A)</p> Signup and view all the answers

Which component is central to the 'What is new' section?

<p>Activities that provoke self-awareness (C)</p> Signup and view all the answers

What is the goal of the 'What I can do' segment?

<p>To apply knowledge in a practical context (B)</p> Signup and view all the answers

Which of the following best describes the 'Engagement' phase?

<p>Involvement in varied tasks to develop attitudes (A)</p> Signup and view all the answers

What does the 'What is it' part focus on?

<p>Developing mastery of target skills or MELC/s (C)</p> Signup and view all the answers

In the 'What else I can do' phase, what is emphasized?

<p>Demonstrating and creating learned concepts (A)</p> Signup and view all the answers

Which aspect does the 'What I have learned' section enhance?

<p>Reflecting and utilizing knowledge effectively (D)</p> Signup and view all the answers

What is the overall aim of the development process described?

<p>To support mastery of skills through engagement (A)</p> Signup and view all the answers

What is categorized as 'Above Expectations' regarding content in the rubric?

<p>Clear information about the effects of two types of EM waves. (C)</p> Signup and view all the answers

What does the 'Creativity' criterion indicate at the 'Below Expectations' level?

<p>More than two pictures and captions reflect little creativity. (B)</p> Signup and view all the answers

Which category describes the clarity and neatness of material that is 'Approaching Expectations'?

<p>Hard to read with few illustrations and labels. (B)</p> Signup and view all the answers

What defines the 'Meets Expectations' level in the clarity and neatness category?

<p>Material is easy to read with most elements clearly written. (D)</p> Signup and view all the answers

Under the rubric, what is an indicator of creativity in the 'Above Expectations' category?

<p>Pictures and captions reflect an exceptional degree of creativity. (C)</p> Signup and view all the answers

What does the 'Below Expectations' criteria mainly highlight regarding content?

<p>Little to no clear information provided. (A)</p> Signup and view all the answers

What characteristic defines material that is 'Above Expectations' in terms of clarity and neatness?

<p>All elements are clearly written and easy to read. (C)</p> Signup and view all the answers

Which of the following best describes the content needed for a campaign material to justify a '3' on the rubric?

<p>Quite clear information on one type of EM wave with persuasion. (A)</p> Signup and view all the answers

Flashcards

Development

A part of the learning process focused on building learner knowledge, skills, and values.

Engagement

A learning phase where learners actively apply learned skills and concepts to real-world situations.

Assimilation

The part of learning where learners reflect, relate, and effectively use new knowledge and skills in different contexts.

What I know

A learning activity where learners identify their current knowledge and skills related to a lesson.

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What I do not know

A part of learning, where learners discover areas needing further development and study.

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What I want/need to know

A learning step highlighting what a learner desires to understand and acquire from a lesson.

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Mastery of skills/MELC/s

The focus in developing proficiency in the targeted skills or learning competencies in a lesson.

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KSAVs

Knowledge, Skills, Attitudes/Values - the key areas to develop in learning.

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Electromagnetic Spectrum

A range of electromagnetic waves that differ in wavelength and frequency.

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Electromagnetism

The interaction between electricity and magnetism.

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Electromagnetic Waves

Waves that transport energy.

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Wavelength

The distance between two corresponding points on a wave.

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Oersted's Discovery

A magnetic needle is deflected when current in a nearby wire varies, linking electricity and magnetism.

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Ampere's Experiments

Experiments to understand the relationship between electric current and magnetism.

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Electromagnetic Theory

A theory explaining the relationship between electricity and magnetism.

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Hans Christian Oersted

Danish physicist who discovered the relationship between electricity and magnetism.

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EM Spectrum

The entire range of electromagnetic radiation, ordered by increasing frequency from radio waves to gamma rays.

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Radio Waves

Longest wavelength, lowest frequency electromagnetic waves used for communication, broadcasting, and radar.

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Microwaves

Short wavelength, high frequency EM waves used for heating and communication, like in microwave ovens and cellular networks.

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Infrared

Medium wavelength, higher frequency EM waves used for heat sensing, night vision, and thermal imaging.

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Visible Light

The only part of the EM spectrum we can see, with wavelengths that correspond to different colors.

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Ultraviolet (UV)

Short wavelength, high frequency EM waves that can cause sunburn and damage DNA.

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X-rays

Very short wavelength, high frequency EM waves used for medical imaging and security.

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Gamma Rays

Shortest wavelength, highest frequency EM waves, highly energetic and can be dangerous.

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Amplitude Modulation (AM)

A method of broadcasting where the amplitude of the radio waves changes to match the audio signal.

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Frequency Modulation (FM)

A method of broadcasting where the frequency of the radio waves changes to match the audio signal.

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Radio Frequency Oscillator

A device that produces radio waves with a specific frequency.

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Modulator

A device that combines the audio signal with the radio waves, creating a modulated carrier wave.

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Amplifier

A device that increases the strength of the modulated carrier wave.

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Microphone

A device that converts sound waves into electrical signals.

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How are signals transmitted through radio waves?

Sound is converted into electrical signals, then combined with radio waves, amplified, and sent through the air.

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What is 'Content' in this rubric?

It refers to how well the material explains the effects of electromagnetic waves, specifically their impact on individuals and the importance of precautions.

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What does 'Above Expectations' mean for 'Content'?

The material thoroughly discusses the effects of two different types of electromagnetic waves and the importance of precautions when dealing with them.

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What does 'Creativity' mean in the rubric?

It refers to the use of visual elements like pictures and captions to enhance the material's appeal and understanding.

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What does 'Above Expectations' mean for 'Creativity'?

There are a good number of pictures and captions that showcase creativity and attention to detail, making the content visually engaging and informative.

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What does 'Clarity and Neatness' mean?

This aspect evaluates how easy it is to read and understand the material. It also looks at the quality of writing, labeling, and illustrations.

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What does 'Above Expectations' mean for 'Clarity and Neatness'?

The material is extremely easy to read, all elements are clearly written, labeled, and illustrated, making it very effective for understanding.

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What does 'Below Expectations' mean for 'Content'?

The material lacks detailed information about the effects of different electromagnetic waves and provides little guidance on precautions.

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What does 'Below Expectations' mean for 'Clarity and Neatness'?

The material is difficult to read, with limited illustrations and unclear labels, making it hard to understand the information presented.

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Convex Mirror

A curved mirror that reflects light outwards, causing diverging rays. It always forms a virtual, upright, and smaller image.

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Concave Mirror

A curved mirror that reflects light inwards, causing converging rays. It forms various images depending on object position. Usually, it forms a real, inverted, and bigger image.

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Image Formation in a Convex Mirror

The image formed by a convex mirror is always virtual, upright, and smaller than the object. The image appears behind the mirror.

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Image Formation in a Concave Mirror

The image formed by a concave mirror depends on the object's position. For objects beyond the center of curvature, it's a real, inverted, and smaller image. For objects between the focus and the pole, it's virtual, upright, and bigger.

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What makes a mirror converging or diverging?

The shape of the mirror determines the direction of light reflection. Convex mirrors reflect light outwards (diverging), while concave mirrors reflect light inwards (converging).

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Virtual Image

An image formed by the apparent intersection of light rays, where real light rays don't actually converge. It cannot be projected onto a screen.

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Real Image

An image formed by the actual intersection of light rays, where real light rays converge. It can be projected onto a screen.

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Why is a convex mirror used as a side view mirror in a car?

It provides a wider field of view, showing a larger area behind the car. The virtual and smaller image helps the driver see more.

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Study Notes

PIVOT 4A Learner's Material

  • This is a learner material for Science Grade 10, Quarter 2.
  • It's developed by DepEd CALABARZON and is based on MELC (Most Essential Learning Competencies).
  • It uses the IDEA (Instructional Process) module design to suit learner needs and interests.
  • It contains various activities of graduated difficulty levels, from simple to complex.
  • Republic Act 8293, section 176, states that no copyright subsists in any work of the Government of the Philippines.
  • Prior approval of the government agency or office where the work was created, however, is required for its commercial exploitation.
  • Borrowed materials, including songs, stories, poems, pictures, etc., are owned by their respective copyright holders.
  • The publisher and authors do not claim ownership over any borrowed materials.

Guide for Using the Material

  • The module is designed to aid parents, guardians, and siblings in understanding the learning materials and activities.
  • The MELCs (Most Essential Learning Competencies) in Science are followed.
  • Learners should complete the activities in their answer sheet.
  • The module allows for individual pacing.
  • Learners should complete activities in separate sheets of paper.
  • Learners must accomplish the PIVOT Assessment Card on page 38, recording personal assessments.
  • Completed activities/outputs must be submitted to respective teachers.

Parts of PIVOT 4A Learner's Material

  • The K to 12 learning delivery process is outlined into parts for clear understanding.
  • The parts include "What I need to know", "What's new", "What is in", "What is it", "What is more", "What I can do", "What else can I do", "What I have learned" and "What I can achieve".

Electromagnetic Spectrum

  • The Electromagnetic spectrum is a continuum of EM waves from lowest to highest frequencies.
  • It includes radio waves, microwaves, infrared, visible light, ultraviolet rays, X-rays, and gamma rays.
  • Electromagnetic waves transport energy through empty space and have different amounts of energy possessed by the photons.
  • Radio waves have the longest wavelengths and lowest frequencies while Gamma rays have the shortest wavelengths and highest frequencies.

Learning Task 1, 2, 3, 4, 5

  • These are learning activities for the learners.
  • They may involve matching scientists to their contributions, exploring the EM spectrum, completing tables, and applying concepts.
  • Instructions for each task guide learners for performing the task.

Practical Applications of EM Waves

  • Radio waves, for example, carry signals for radio and television broadcasting, and communications.
  • Microwaves are important in satellite communication.
  • Infrared waves are used in remote controls, appliances, and night vision goggles.
  • Visible light is used by humans in X-ray photography to view the inside of the body.
  • X-rays are used in medical imaging to look inside the body.
  • Gamma rays are used in nuclear reactions and radiotherapy.

The effects of EM radiation on living things and the environment, indicators in our surroundings.

  • Living tissues have magnetic properties that are affected by EMR.
  • Living things are indicators of exposure to radiation.
  • EMR is present in many aspects of our everyday lives, including natural and man-made sources.
  • There are both advantages and disadvantages of EM radiation.
  • Both natural and man-made factors influence the levels of EMR.

Content of Material

  • The material contains substantial scientific information regarding the EM Spectrum, wave properties, types of mirrors, lenses, uses for optical devices, and descriptions and practical implications for living things and everyday uses.

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PIVOT 4A CALABARZON Science G10 Learner's Material 2020 PDF

Description

This learner's material is designed for Grade 10 Science, following the Most Essential Learning Competencies (MELC). Developed by DepEd CALABARZON, it provides a range of activities with varying difficulty to engage students effectively. Aimed at assisting parents and guardians, it leverages the IDEA module design to cater to learner needs and interests.

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