All flashcards
Flashcard 1: What is an example of an artificial light source that can help you see objects indoors?
Answer: A lamp (light bulb). Lamps use electricity to produce light artificially for indoor illumination.
Flashcard 2: Which option is visible in complete darkness: a book or a turned-on flashlight?
Answer: A turned-on flashlight. Flashlights produce their own light, making them visible even in darkness.
Flashcard 3: Identify the best conclusion: If you turn off the lights, why does a toy become harder to see?
Answer: Less light reflects from the toy to your eyes. Without light sources, there's less light available to bounce off objects.
Flashcard 4: Which option best explains seeing a chair near a window during daytime without a lamp?
Answer: Sunlight enters and reflects from the chair to your eyes. Natural light from outside illuminates objects without needing artificial sources.
Flashcard 5: Which option best describes what your eyes need in order to see an object clearly?
Answer: Light must enter your eyes. Eyes detect light; without light entering them, vision is impossible.
Flashcard 6: Identify what happens when you shine a flashlight on a wall in a dark room.
Answer: The wall becomes visible where the light hits. The flashlight's beam illuminates that specific area, making it visible.
Flashcard 7: Which option is more visible in dim light: a white paper or a black paper, and why?
Answer: White paper, because it reflects more light. Light colors reflect more light than dark colors, improving visibility.
Flashcard 8: What is the correct meaning of the word visible in science observations?
Answer: Able to be seen. In science, visible means something can be detected by sight.
Flashcard 9: Which option best describes a careful observation: guessing or using your senses to notice details?
Answer: Using your senses to notice details. Scientific observations rely on sensory evidence, not assumptions.
Flashcard 10: Which option best describes a light source: an object that makes light or an object that only reflects light?
Answer: A light source is an object that makes light. Light sources produce their own light, unlike objects that only reflect it.
Flashcard 11: What is the main reason many objects are difficult to see in complete darkness?
Answer: No light reaches your eyes from the objects. Without light to reflect, objects cannot send visual information to your eyes.
Flashcard 12: What is the main reason most objects are visible to your eyes in a bright room?
Answer: Light reflects from objects into your eyes. Objects don't emit light themselves; they need light to bounce off them for visibility.
Flashcard 13: Which option best completes the rule: More light usually makes objects to see.
Answer: Easier. Increased light provides more illumination for objects to reflect.
Flashcard 14: What is an example of a natural light source that can help you see objects?
Answer: The Sun. The Sun produces its own light naturally, illuminating Earth during daytime.
Flashcard 15: Choose the correct result: In a dark closet, you open the door to a lit room; what happens to visibility?
Answer: Objects become more visible as light enters the closet. Light from the room enters the closet, illuminating previously dark objects.
Flashcard 16: Which option is a correct observation statement: 'I think' or 'I see the ball is red'?
Answer: 'I see the ball is red.'. Observations describe what you directly perceive, not what you assume.
Flashcard 17: Identify the tool you can use to make a dark place brighter so objects become visible.
Answer: A flashlight. Flashlights are portable light sources that illuminate dark areas.
Flashcard 18: Identify the correct statement: Objects make their own light, or objects reflect light?
Answer: Most objects reflect light. Only special objects like stars make light; most just reflect it.
Flashcard 19: Choose the correct conclusion: In a closed dark closet, a toy is easier to see or harder to see?
Answer: Harder to see. No light in closets means objects can't be seen.
Flashcard 20: Which option makes a shadow larger: moving an object closer to the light or farther from the light?
Answer: Moving the object closer to the light. Closer objects block more light, creating bigger shadows.
Flashcard 21: Identify what will make a book easier to see: turning on a lamp or turning off a lamp.
Answer: Turning on a lamp. More light makes objects more visible.
Flashcard 22: Which option is easiest to see in dim light: a bright white paper or a dark black cloth?
Answer: Bright white paper. Light colors reflect more light than dark colors.
Flashcard 23: What causes a shadow to form behind an object?
Answer: The object blocks light. Objects stop light from passing through, creating dark areas.
Flashcard 24: Which option best describes a shadow: an area with more light or less light?
Answer: An area with less light. Shadows form where objects block light from reaching.
Flashcard 25: What is the main reason most objects are visible in a bright room?
Answer: Light reflects off objects and reaches your eyes. Light bounces from objects to our eyes, making them visible.
Flashcard 26: What happens to visibility when there is no light in a room?
Answer: Most objects are not visible. Without light to reflect, objects cannot be seen.
Flashcard 27: Which sense is mainly used to observe whether an object is visible: sight or hearing?
Answer: Sight. Eyes detect light to see objects, not ears.
Flashcard 28: Which option is a light source: a lit lamp or an unlit lamp?
Answer: A lit lamp. Only lit lamps produce light; unlit ones don't.
Flashcard 29: What does it mean if an object is described as visible?
Answer: It can be seen with your eyes. Visible means light reaches your eyes from the object.
Flashcard 30: What does it mean if an object is described as not visible?
Answer: It cannot be seen with your eyes. Not visible means no light reaches your eyes from it.