1. Why do scientists use straight arrows in models to represent the path of light?
- A. To show that light travels in straight lines.
- B. To measure the speed at which light travels.
- C. To represent the different colors within the light.
- D. To indicate that light is made of particles.
2. In a scientific model showing how a person sees a tree on a sunny day, what is the correct sequence for the path of light?
- A. Sun → Person's eye → Tree
- B. Sun → Tree → Person's eye
- C. Person's eye → Tree → Sun
- D. Tree → Sun → Person's eye
3. A student is in a dark room with a small toy car and a flashlight. If the student shines the flashlight on a wall away from the car, why can't they see the car?
- A. The car is too small to be seen in the dark.
- B. The student's eyes have not adjusted to the darkness.
- C. The car does not produce its own light.
- D. No light from the flashlight is reflecting off the car and entering the student's eyes.
4. What is the primary purpose of a scientific model, such as the one using arrows to show the path of light?
- A. To be a perfect, exact copy of a real-world event.
- B. To prove a scientific theory is absolutely true.
- C. To make a complex process simpler to understand and predict.
- D. To replace the need for conducting physical experiments.
5. If a large, opaque screen is placed between you and a lamp, you can no longer see the lamp. How does the path of light model explain this?
- A. The screen absorbs all the energy from your eyes.
- B. The screen blocks the straight path of light from the lamp to your eye.
- C. The lamp is no longer producing light.
- D. The air around the screen becomes too dense for light to pass through.
6. If you are playing hide-and-seek and hide behind a thick tree, why can't the person who is 'it' see you?
- A. The tree absorbs the sound you are making.
- B. The light reflecting off you is blocked by the tree.
- C. The tree bends the light around itself, making you invisible.
- D. You are moving too fast for them to see you.
7. Imagine a single candle lighting a dark room. If you place a large, flat piece of cardboard between your eyes and the candle, the candle flame becomes invisible. Why?
- A. The cardboard cools the air, stopping the light.
- B. The cardboard interrupts the path of light.
- C. The cardboard absorbs all the heat from the flame.
- D. The candle is not bright enough to be seen through cardboard.
8. The inability to see around corners is a direct consequence of which principle?
- A. Light travels in straight lines.
- B. Light loses energy over distance.
- C. Light reflects off of dull surfaces.
- D. Light is a form of electromagnetic radiation.
9. Which property of light best explains why a shadow is formed when you stand in the sun?
- A. Light travels in straight lines.
- B. Light can be different colors.
- C. Light produces heat.
- D. Light moves faster in a vacuum.
10. A student is in a brightly lit room but cannot see a toy car placed behind a large, solid box. What is the scientific reason for this?
- A. The toy car is not bright enough to be seen.
- B. The light in the room is not the right color.
- C. The box is an obstacle that blocks the straight path of light from the toy car to the student's eyes.
- D. The student's eyes need time to adjust to the light in the room.