This learning resource is available in interactive and printable formats. The interactive worksheet can be played online and assigned to students. The Printable PDF version can be downloaded and printed for completion by hand.
This science passage is specifically designed to meet the Next Generation Science Standards (NGSS) for 4th grade, focusing on the disciplinary core concept of PS3.A: Definitions of Energy. It serves as an excellent resource for building reading comprehension skills while introducing students to the fundamental principles of light energy. The passage is crafted with simple, accessible language to help young learners grasp key scientific concepts, such as the definition of light energy, its various sources like the sun and flashlights, and its properties, including traveling in straight lines and creating shadows. It also covers the concept of reflection through an easy-to-understand example of a mirror. The accompanying assessment questions are strategically aligned with Webb's Depth of Knowledge (DOK) levels 1-3, ensuring a thorough evaluation of student understanding from basic recall to complex application of the material. This comprehensive package provides a valuable tool for science educators to effectively teach and assess core NGSS standards related to energy.
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Light Energy is a kind of energy we can see. It travels from a source like the sun, light bulbs, or fire to our eyes. Without light energy, we would not be able to see anything around us.
There are many sources of light. Some are natural, like the sun, stars, fire, lightning, and fireflies. Others are human-made, such as light bulbs, computer screens, flashlights, and lasers. No matter where it comes from, light energy travels in straight lines called rays.
Light is the fastest thing in the universe! It travels at 186,000 miles per second. That means sunlight takes only about 8 minutes to travel from the sun to Earth. Light energy zooms through space like the fastest superhero ever!
We see objects because light bounces off them and enters our eyes. This bouncing is called reflection. For example, a mirror or calm water can show your face because they reflect light well. When something blocks light, it creates a shadow behind it. Shadows happen because light travels in straight lines and cannot go through most solid things.
White light is actually made of all colors mixed together. When light passes through a prism or even a raindrop, it splits into a rainbow of colors: red, orange, yellow, green, blue, and violet. This is why we see rainbows in the sky after it rains!
Dark colors absorb (take in) more light energy and can get warmer in sunlight. Plants use light energy in a process called photosynthesis to make their own food.
It is important to be safe with light energy. Never look directly at the sun because too much light can hurt your eyes.
Interesting Fact: Light from the moon is actually sunlight bouncing off the moon's surface and traveling to our eyes!
What is a source of light?
The sunA cloudA treeA shadow
What is reflection?
Light bouncing off surfacesLight being blockedLight mixing colorsLight making shadows
What happens when something blocks light?
A shadow formsA rainbow appearsLight moves fasterLight changes color
Why do we see rainbows?
Light splits into colorsLight gets blockedLight bounces off mirrorsLight slows down
What do plants use light energy for?
To make foodTo make shadowsTo reflect lightTo split colors
What would happen if there was no light?
We could not seeWe see betterMore rainbowsPlants grow faster
Light travels in straight lines. True or false?
TrueFalse
What is a shadow?
A dark shape made by blocking lightA type of lightA color in a rainbowA light source