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WorksheetsCan I Believe My Eyes? IQWST Grade 6 Unit 1 Assessment
Total questions: 25
Worksheet time: 1hrs 15mins
John and Justin are playing hide and seek at home. From the back of a room, John says he can see Justin around the corner in the next room. Is John cheating, or can he see around the corner? What is the explanation for your answer?
John is not cheating. It is possible to see around corners because light can bend around corners.
John is cheating. The light that hits Justin needs an unblocked straight path to John’s eyes in order for him to see Justin. The corner blocks the straight path of light.
The power is out in your house, and you want to call a friend to see if the power is out in her house too! But your phone is in your backpack! You put your backpack down somewhere before the power went out and you cannot remember where it is. First, you must find the backpack in the dark using a flashlight.
How are you able to see the backpack?
Light bounces off the backpack in all directions.
Light only bounces off the backpack to my eye.
Light is absorbed by the backpack.
The power is out in your house, and you want to call a friend to see if the power is out in her house too! But your phone is in your backpack! You put your backpack down somewhere before the power went out and you cannot remember where it is. First, you must find the backpack in the dark using a flashlight.
How does the light reaches your eye?
All of the light travels from the backpack to your eye, allowing you to see.
Some of the light travels from the backpack to your eye, allowing you to see.
How does the pupil help you see?
It keeps out the light.
It stays the same size and lets in all of the light.
It changes size to let in enough light to see.
What cells in the retina help you see color?
cones
rods
What cells in the retina help you see in low light but do not see color?
rods
cones
What sends the information you see to your brain?
retina
iris
optic nerve
cornea
In the following picture, how does the house make a shadow?
The house blocks all the sunlight from reaching the ground.
The house blocks the sunlight creating a shadow on the ground where no sunlight reaches. The light only reaches the area surrounding the shadow.
Houses always make shadows whether there is a source of light or not.
What is one thing wrong with the picture?
The shadow is too tall.
The shadow is not dark enough.
The shadow is too wide.
The shadow is not the correct shape.
Why is the shadow on the wrong side of the person in the picture?
The shadow is going toward the light source.
The shadow is going away from the light source.
The shadow has a mind of its own.
What needs to occur for you to be able to see a tree through a window?
Light from the sun transmits through the window in a straight path and hits my eyes. Then, I can see the tree.
Light from the sun hits the tree. Some of the light that bounces off the tree reaches the window. Most of the light goes through the window. I see the the tree as the light reaches my eyes.
Students are copying their homework assignment from the blackboard in their dimly lit classroom. Some students are wearing eyeglasses, some are not wearing anything over their eyes, and one student is wearing dark sunglasses.
Which material allows the least amount of light to pass through it so that the smallest amount of light reaches the student’s eyes?
air
eyeglasses
sunglasses
all allow the same amount of light
Students are copying their homework assignment from the blackboard in their dimly lit classroom. Some students are wearing eyeglasses, some are not wearing anything over their eyes, and one student is wearing dark sunglasses.
Pick 2 statements that are true.
Air transmits all light.
Eyeglasses transmit almost none of the light that reaches them.
Eyeglasses reflect most of the light that reaches them.
Sunglasses absorb most of the light that reaches them and transmit the rest.
A mirror and a piece of white paper both reflect light. An experiment is set up in which a flashlight is shined on a mirror or a piece of paper from different positions. Scientists measure and record how much light is reflected. Which of the following statements is true about the results of the experiment with the mirror?
Almost all the light reaching the mirror from the flashlight is reflected toward position 3.
Most of the numbers are small because the flashlight is pointing away from the mirror instead of pointing toward the mirror.
Which of the following statements is true about the results of the experiment with the paper?
All the light detector readings for the paper are close together (all of them are between 13 and 20 lux).
The paper reflects a greater amount of light at position 1 than the mirror at position 1.
Both statements.
Neither statement.
Why did the mirror and paper to reflect light differently at positions 1-5?
Paper is rough and scatters light.
The mirror is smooth and reflects light.
Both statements.
Neither statement.
It is a sunny summer day and you are walking barefoot. You notice that the road is hotter than the sidewalk. What is the best explanation for why the road gets hotter than the sidewalk?
The road is a darker color, so it absorbs more sunlight. The more light an object absorbs, the hotter it will get.
The sidewalk is a lighter color, so it absorbs more sunlight. The more light an object absorbs, the cooler it gets.
The sidewalk is shaded by trees, so no light reaches the sidewalk and it does not heat up.
A green light and a red light are mixed by shining them together on a white screen. What color will light on the screen appear to be?
black
yellow
white
Why is the light on the screen brighter when both the red light and the green light shine on the screen?
The light on the screen is made of both red light and green light.
The light on the screen is reflecting more light to our eyes than just the green light.
The more light that reaches our eyes, the brighter the light appears.
All of the above
What amount of red, green, and blue light is necessary to make black?
A little bit of red, green, and blue light is needed to make black.
A lot of red, green, and blue light is needed to make black.
No amount of red, green, and blue light is needed to make black.
When white light shines on a pair of jeans, the jeans look blue. Why do the jeans look blue?
The jeans reflect the blue part of the light and absorb most of the rest.
The jeans absorb only the blue part of the light.
The jeans give off their own blue light.
A science student was interested in knowing if the color of light affects the growth of a plant. They set up the experiment below. Green light is shining on a green plant in a red pot. There are no other lights in the room.
What color will the green plant appear to be?
black
green
white
red
A science student was interested in knowing if the color of light affects the growth of a plant. They set up the experiment below. Green light is shining on a green plant in a red pot. There are no other lights in the room.
What color will the red pot appear to be?
black
green
white
red
Look at the red and green light waves in figure 2. Which statement best describes the difference between the red and green light waves?
The red light wave has a larger wavelength and lower frequency than the green light wave.
The green light wave has a larger wavelength and lower frequency than the red light wave.
A science student was interested in knowing if the color of light affects the growth of a plant. Which plant will grow better, a green plant illuminated by green light or a green plant illuminated by red light?
a green plant illuminated by green light
a green plant illuminated by red light
