All flashcards
Flashcard 1: What is the best definition of an investigation in science?
Answer: A planned test to find out what happens and record results. Investigations involve systematic testing and documentation.
Flashcard 2: What does it mean to keep variables the same (a fair test)?
Answer: Change only one thing and keep everything else the same. Fair tests isolate one variable to see its effect.
Flashcard 3: Which item is the best light source to use for a classroom light test?
Answer: A flashlight. Flashlights provide consistent, controllable light.
Flashcard 4: Which material type lets most light pass through: transparent, translucent, or opaque?
Answer: Transparent. Like clear glass, you can see through it clearly.
Flashcard 5: Which material type lets some light through but makes it blurry: transparent, translucent, or opaque?
Answer: Translucent. Like frosted glass, light passes but images blur.
Flashcard 6: Which material type blocks light so you cannot see through it: transparent, translucent, or opaque?
Answer: Opaque. Like wood or metal, no light gets through.
Flashcard 7: What is the correct first step when planning a light-and-materials investigation?
Answer: Ask a testable question. Good questions can be answered by doing an experiment.
Flashcard 8: Which option is a testable question for this skill?
Answer: Which material lets the most light pass through. This can be tested by shining light through materials.
Flashcard 9: Identify the best way to measure light passing through materials in 1st grade.
Answer: Compare how bright a spot looks on a paper screen. Young students can observe brightness differences easily.
Flashcard 10: Which control action makes the test fair when comparing materials?
Answer: Keep the flashlight the same distance each time. Distance affects brightness, so keep it constant.
Flashcard 11: Identify the correct place to put the material during the test.
Answer: Between the flashlight and the screen (paper or wall). Light must pass through the material to reach the screen.
Flashcard 12: Which option best describes a prediction for this investigation?
Answer: A statement of what you think will happen before testing. Predictions are educated guesses based on knowledge.
Flashcard 13: Choose the word that best fits: Wax paper is usually .
Answer: Translucent. You can see light through it but not clear details.
Flashcard 14: Choose the word that best fits: Cardboard is usually .
Answer: Opaque. It blocks all light from passing through.
Flashcard 15: Choose the word that best fits: Clear plastic wrap is usually .
Answer: Transparent. You can see clearly through it like window glass.
Flashcard 16: Identify the best way to record results during the investigation.
Answer: Use a simple table with each material and the observation. Tables organize data clearly for comparison.
Flashcard 17: Which conclusion matches this result: no light passes through the material?
Answer: The material is opaque. No light passing means the material blocks it completely.
Flashcard 18: Which option is the best test question: A) Which material lets more light through? B) Why is light bright?
Answer: A) Which material lets more light through. A testable question focuses on what can be measured.
Flashcard 19: What does opaque mean when light hits a material?
Answer: No light passes through; it blocks light. Like wood, metal, or thick paper.
Flashcard 20: Which step should come first in planning a light investigation: make observations, change materials, or record results?
Answer: Make observations (ask the question). Questions come from observing the world around us.
Flashcard 21: What does translucent mean when light hits a material?
Answer: Some light passes through; objects look blurry. Like wax paper or frosted glass.
Flashcard 22: What does transparent mean when light hits a material?
Answer: Most light passes through; objects are seen clearly. Like clear glass or plastic wrap.
Flashcard 23: Which tool is best for seeing if light makes a shadow behind a material?
Answer: A white screen or sheet of paper. Light surfaces show shadows clearly when light is blocked.
Flashcard 24: Which item is a good light source to use in a classroom investigation?
Answer: A flashlight. Safe, portable, and easy for young students to control.
Flashcard 25: What is an investigation in science?
Answer: A planned test to answer a question using observations. Scientists investigate to find answers through careful testing.
Flashcard 26: Which result best matches a translucent material: clear image, blurry image, or no light?
Answer: Blurry image. Translucent materials scatter light, making things fuzzy.
Flashcard 27: What is the best way to record results in a 1st grade light investigation?
Answer: A simple table or chart of observations. Visual records help young learners organize findings.
Flashcard 28: Which result best matches an opaque material: clear image, blurry image, or dark shadow?
Answer: Dark shadow. Opaque materials block all light, creating shadows.
Flashcard 29: Which result best matches a transparent material: clear image, blurry image, or no light?
Answer: Clear image. Transparent materials let all light through unchanged.
Flashcard 30: What is the correct meaning of opaque when light hits a material?
Answer: No light passes through. Like a wall - completely blocks all light.