Podcast
Questions and Answers
A bowling ball is rolled down a lane. Which of Newton's Laws best explains why the ball eventually slows down and stops?
A bowling ball is rolled down a lane. Which of Newton's Laws best explains why the ball eventually slows down and stops?
- Newton's 2nd Law, because the force applied is not enough to keep it moving.
- Newton's 1st Law, due to friction between the ball and the lane. (correct)
- Newton's 3rd Law, for every action, there is an equal and opposite reaction.
- Newton's 1st Law, due to inertia of the ball resisting changes in motion.
Which of the following scenarios best demonstrates the concept of potential energy being converted into kinetic energy?
Which of the following scenarios best demonstrates the concept of potential energy being converted into kinetic energy?
- A pot of water boiling on a stove.
- A stretched rubber band being released. (correct)
- A car parked on a hill.
- A light bulb emitting light.
If you increase the frequency of a wave, what happens to its wavelength, assuming the wave's speed remains constant?
If you increase the frequency of a wave, what happens to its wavelength, assuming the wave's speed remains constant?
- The wavelength stays the same.
- The relationship between frequency and wavelength is unpredictable.
- The wavelength increases.
- The wavelength decreases. (correct)
During a thunderstorm, you see lightning before you hear thunder. What does this observation demonstrate about light and sound?
During a thunderstorm, you see lightning before you hear thunder. What does this observation demonstrate about light and sound?
The Philippines is known for its volcanic activity. Which geological feature primarily contributes to this?
The Philippines is known for its volcanic activity. Which geological feature primarily contributes to this?
Why do earthquakes primarily occur at the boundaries between Earth's tectonic plates?
Why do earthquakes primarily occur at the boundaries between Earth's tectonic plates?
A flashlight emits light and also produces some heat. What forms of energy are being produced by the flashlight?
A flashlight emits light and also produces some heat. What forms of energy are being produced by the flashlight?
If a glass prism is used to separate white light into different colors, which wave property is primarily responsible for this phenomenon?
If a glass prism is used to separate white light into different colors, which wave property is primarily responsible for this phenomenon?
Flashcards
What is Force?
What is Force?
A push or pull that can change an object's motion.
Newton's First Law (Inertia)
Newton's First Law (Inertia)
An object stays still or moves steadily unless a force changes it.
What do Waves do?
What do Waves do?
Waves carry energy from one place to another.
Mechanical Waves
Mechanical Waves
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What is Energy?
What is Energy?
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Kinetic Energy
Kinetic Energy
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Reflection of Light
Reflection of Light
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Earth's Crust
Earth's Crust
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Study Notes
- Force is a push or pull altering an object’s speed or direction.
Types of Force
- Gravity pulls objects downward.
- Friction slows objects.
- Applied force is a push or pull exerted by contact.
Newton’s Laws of Motion
- 1st Law (Inertia): Objects remain at rest or in motion unless acted upon by an external force.
- 2nd Law: Force dictates acceleration; greater force accelerates objects faster, and heavier objects require more force for movement.
- 3rd Law: Every action has an equal, opposite reaction.
Waves
- Waves transfer energy from one location to another.
Types of Waves
- Mechanical Waves require a medium, such as water waves.
- Electromagnetic Waves do not need a medium, such as light.
Wave Properties
- Wavelength is the distance between two wave peaks.
- Frequency measures waves passing a point per unit of time.
Energy and Energy Forms
- Energy enables motion and activity.
Types of Energy
- Kinetic Energy is the energy of motion.
- Potential Energy is stored energy.
- Thermal Energy is heat.
- Light Energy originates from sources like the sun and light bulbs.
- Sound Energy comes from vibrations propagating through air.
- Electrical Energy is sourced from outlets and batteries.
Light Energy
- Light is visible energy.
How Light Works
- Reflection occurs when light bounces off surfaces.
- Refraction is when light bends through materials like water.
- Absorption is when light is converted into heat.
- Speed of Light: Travels at 300,000 km per second.
The Philippine Archipelago
- The Philippines is comprised of over 7,000 islands in Southeast Asia.
Regions
- Luzon
- Visayas
- Mindanao
Landforms
- Characterized by mountains, volcanoes, beaches, and forests.
- The archipelago is situated on the Pacific Ring of Fire, experiencing earthquakes and volcanoes.
Earth and Earth's Layers
Earth’s Layers
- Crust: The outermost layer.
- Mantle: Beneath the crust, consisting of hot, semi-solid rock.
- Outer Core: A liquid layer composed of iron and nickel.
- Inner Core: Solid, made of iron and nickel.
- Plate Tectonics: Describes the Earth’s crust divided into moving plates, causing earthquakes and volcanoes.
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Description
Exploration of forces like gravity and friction, Newton's laws of motion, and wave energy. Covers mechanical and electromagnetic waves, wavelength, and frequency. Also, it touches on kinetic and potential energy.
