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- 1. Multiple Choice
Which is NOT a condition needed to see an object.
eye
light
object
magnifying glass
clear line of sight or unblocked path for light to travel
- 2. Multiple Choice
Which is NOT TRUE about light?
It travels in straight lines.
It travels in all directions from source until blocked.
It travels continuously.
It travels through all materials and objects.
- 3. Multiple Choice
The light source and object you are looking at can sometimes be the same thing.
True
False
- 4. Multiple Choice
The “spinning” circles and checkerboard phenomena were examples of
optical illusions
light sources
models of how we see
- 5. Multiple Choice
Which of the following are examples is NOT a light source.
Flashlight
Battery
Candle
Television
- 6. Multiple Choice
To see an object light first travels in a straight line from the source to the object and then bounces off the object and travels to our eye.
True
False
- 7. Multiple Choice
Multiple people could never use the same model.
True
False
- 8. Multiple Choice
As we learn more about the process of seeing, we are able to modify our models to include updated information.
True
False
- 9. Multiple Choice
Which is NOT true about models.
Globes and maps are two different kinds of models of the earth.
Scientists use models to help us understand phenomena.
Each model has advantages and disadvantages.
Models have to be colorful and very detailed.
- 10. Multiple Choice
The power is out at Kate’s house, so there are no lights. She wants to phone the power company to report the problem. First, she gets a flashlight.
Which model best represents how light behaves so that Kate is able to see her phone even though the screen is dark and why?
Model 1 best shows light moving in straight lines.
Model 1 best represents how light from the flashlight reaches her phone and bounces off the phone in all directions. Some of the light reaches her eyes.
Model 2 best shows light moving in straight lines.
Model 2 best represents how the light from the flashlight reaches her phone and bounces off the phone in all directions.
- 11. Multiple Choice
Which part of your eye acts like a sensor and sends an electrical sign to your brain through the optic nerve?
iris
cornea
retina
lens
- 12. Multiple Choice
Which part of your eye is the opening through which light enters the eye?
iris
retina
pupil
optic nerve
- 13. Multiple Choice
According to the data in the chart, which of these locations was the brightest?
under the chair
middle of room
toward a white piece of paper
corner of the room
- 14. Multiple Choice
Which model best shows that the detector can see the heart?
Model 1
Model 2
Both
Neither
- 15. Multiple Choice
True or False. An object appeared brighter to my eyes when the lux reading on the light sensor was greater and dimmer when the lux readings on the sensor were smaller.
True
False
- 16. Multiple Choice
The brightness (lux) was higher when the sensor was closer to the light source.
True
False
- 17. Multiple Choice
The brightness (lux) was higher when the light sensor was pointed at the floor than when it was pointed directly at the ceiling lights.
True
False
- 18. Multiple Choice
Giant sea squids are known to have the largest eyes of any animal in the animal kingdom. What advantage do their large pupils give giant sea squids?
It protects their eys from birght light.
It allows more light to enter there eye, making it possible to see with very little light.
It allow giant squids to see even when there is no light.
It allows them to see through cave walls.
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