This 250-word reading passage introduces Grade 4 students to the concept of energy conversion in electric circuits, aligned with NGSS standards PS3.A, PS3.B, and PS3.D. Students discover that electric circuits are pathways that convert electrical energy into other useful forms such as light, heat, motion, and sound. Through real-world examples like light bulbs, motors, and speakers, learners understand that every electrical device is a circuit designed to transform energy for specific purposes. The passage uses simple, age-appropriate language and includes bolded key vocabulary terms with immediate definitions. Audio-integrated features support diverse learners, while differentiated versions ensure accessibility for students at various reading levels. Accompanying activities include multiple-choice comprehension questions, writing prompts that require students to explain and apply concepts, and graphic organizers that help visualize energy transformation processes. This resource builds foundational understanding of energy conversion, preparing students for hands-on investigations and deeper exploration of physical science concepts. Perfect for elementary science classrooms implementing NGSS standards.
Written by Workybooks TeamPublished by Workybooks
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An electric circuit is a complete pathway that allows electricity to flow from a power source, through wires, and back again. Circuits are important because they convert, or change, electrical energy into other useful forms of energy that we need every day.
When you turn on a lamp, the circuit converts electrical energy into light so you can see. The light bulb also produces heat, which you can feel if you carefully touch the bulb after it has been on for a while. A circuit with a light bulb changes electrical energy into both light energy and heat energy.
Some circuits contain motors instead of light bulbs. A motor is a device that spins or moves when electricity flows through it. These circuits convert electrical energy into mechanical energy, which means energy of motion. Fans, toy cars, and blenders all use motors to create movement.
Other circuits have speakers that convert electrical energy into sound energy. When you listen to music on a radio or hear your teacher's voice through a speaker, electrical energy is being changed into sound waves that travel to your ears.
Every electrical device you use—from flashlights to computers—is a circuit designed to convert energy from one form to another for a specific purpose. Understanding how circuits work helps us use energy wisely and safely.
What is an electric circuit?
A pathway for electricity to flowA type of batteryA kind of light bulbA power plant
What two energy forms does a light bulb produce?
Sound and motionLight and heatHeat and motionLight and sound
What does a motor convert electrical energy into?
Light energySound energyMechanical energyHeat energy
Why would a toy car need a circuit?
To convert electrical energy into motionTo make loud soundsTo produce bright lightsTo stay completely still
How does a speaker change energy?
Changes sound into electricityChanges motion into heatChanges electrical energy into soundChanges light into motion
Which device converts electrical energy into mechanical energy?
A light bulbA fanA speakerA flashlight
All electrical devices are circuits.
TrueFalse
What does 'convert' mean in this passage?
To break somethingTo change from one form to anotherTo make something biggerTo turn something off