All flashcards
Flashcard 1: Which observation best shows reflection: passes through, some passes, blocks, or bounces back?
Answer: Bounces back. Reflection means light returns to where it came from.
Flashcard 2: What is reflection when testing materials with a beam of light?
Answer: Light bounces off a surface instead of passing through. Like a mirror, the light changes direction when it hits.
Flashcard 3: Which type of material usually makes the strongest reflection in a light test?
Answer: A smooth, shiny surface. Mirrors and metals reflect light best due to smoothness.
Flashcard 4: What is the correct tool to make a narrow beam of light for testing materials?
Answer: A flashlight. Creates a focused beam needed for accurate material testing.
Flashcard 5: What is a transparent material in a light test?
Answer: A material that lets most light pass through clearly. Like clear glass or water, you can see through it perfectly.
Flashcard 6: What is an opaque material in a light test?
Answer: A material that blocks light from passing through. Like wood or metal, no light can get through at all.
Flashcard 7: What does it mean if no light passes through the material?
Answer: The material is opaque. Complete light blockage creates shadows behind the object.
Flashcard 8: What does it mean if only some light passes and objects look blurry?
Answer: The material is translucent. Partial light transmission causes blurry or fuzzy images.
Flashcard 9: What does it mean if light passes through a material and you see clearly?
Answer: The material is transparent. Clear visibility means all light passes through unchanged.
Flashcard 10: Which word should you record if light gets through but the beam looks dim or fuzzy?
Answer: Some passes. Dim or fuzzy light indicates partial transmission through material.
Flashcard 11: Identify the material type if it blocks light: transparent, translucent, or opaque?
Answer: Opaque. Materials that block all light are called opaque.
Flashcard 12: What is a translucent material in a light test?
Answer: A material that lets some light through but scatters it. Like frosted glass or thin paper, light passes but images blur.
Flashcard 13: Which word should you record if the light makes a dark shadow behind the material?
Answer: Blocks. Shadows form when materials stop light from passing through.
Flashcard 14: Which word should you record if a bright spot appears on a wall after light hits the material?
Answer: Reflects. Bright spots show light bounced off instead of passing through.
Flashcard 15: Which observation matches a mirror best: passes, some passes, blocks, or reflects?
Answer: Reflects. Mirrors are designed to bounce light back, not let it through.
Flashcard 16: Identify the material type if it lets some light through: transparent, translucent, or opaque?
Answer: Translucent. Partial light transmission defines translucent materials.
Flashcard 17: Which observation matches cardboard best: passes, some passes, blocks, or reflects?
Answer: Blocks. Thick paper materials prevent light from passing through.
Flashcard 18: Which word should you record if you can see the flashlight beam on the other side clearly?
Answer: Passes. Clear beam visibility means the material is transparent.
Flashcard 19: What is the name for light bouncing off a surface instead of passing through it?
Answer: Reflection. Like a mirror or water surface bouncing light back.
Flashcard 20: What do you observe when light hits a translucent material?
Answer: Some light passes through; image is blurry. The material scatters light, making things look fuzzy.
Flashcard 21: What do you observe when light passes through a transparent material?
Answer: Light passes through clearly. You can see objects on the other side without distortion.
Flashcard 22: What word describes a material that lets some light pass through but looks blurry?
Answer: Translucent. Like frosted glass, light passes but the view is unclear.
Flashcard 23: Which action makes the test fair: changing the flashlight distance each time or keeping it the same each time?
Answer: Keeping the flashlight distance the same each time. Fair tests require consistent conditions for all materials.
Flashcard 24: What tool is most appropriate to create a beam of light for testing materials in class?
Answer: A flashlight. Provides a focused beam for clear testing results.
Flashcard 25: Which result shows reflection: light passes through, light is blocked, or light bounces back toward you?
Answer: Light bounces back toward you. Reflection occurs when light returns to its source.
Flashcard 26: Which observation best matches a translucent material in a flashlight test?
Answer: Some light passes through; it looks blurry. Translucent materials scatter light as it passes through.
Flashcard 27: Which observation best matches a transparent material in a flashlight test?
Answer: The light passes through clearly. Transparent materials allow full light transmission.
Flashcard 28: Which observation best matches an opaque material in a flashlight test?
Answer: The light does not pass through. Opaque materials completely block light from passing.
Flashcard 29: Identify the correct label for a material that makes a faint, lighter shadow in a beam of light.
Answer: Translucent. Partial light blockage creates lighter, softer shadows.
Flashcard 30: Identify the correct label for a material that creates a dark shadow in a beam of light.
Answer: Opaque. Dark shadows form when materials block all light.