Question

6. How are visible light, the electromagnetic spectrum and photoreceptors in the eye related? (1 point)
Responses

Photoreceptors in the eye detect the electromagnetic spectrum, which is part of the wider visible light range.
Photoreceptors in the eye detect the electromagnetic spectrum, which is part of the wider visible light range.

Photoreceptors in the eye detect the electromagnetic spectrum, which contains a range known as visible light
Photoreceptors in the eye detect the electromagnetic spectrum, which contains a range known as visible light

Photoreceptors in the eye detect visible light, which is part of the wider electromagnetic spectrum
Photoreceptors in the eye detect visible light, which is part of the wider electromagnetic spectrum

Photoreceptors in the eye detect visible light, which contains a range known as the electromagnetic spectrum
Photoreceptors in the eye detect visible light, which contains a range known as the electromagnetic spectrum
Question 7
7. A student drops a rock in a pond and notices that her reflection in the water becomes less clear. Which statement best explains the student's observations? (1 point)
Responses

The water is not able to reflect waves after the rock is dropped in the pond
The water is not able to reflect waves after the rock is dropped in the pond

The surface of the water is no longer hard after the rock is dropped in the pond.
The surface of the water is no longer hard after the rock is dropped in the pond.

The water is not a smooth surface after the rock is dropped in the pond.
The water is not a smooth surface after the rock is dropped in the pond.

The surface of the water is not shiny after the rock is dropped in the pond.
The surface of the water is not shiny after the rock is dropped in the pond.
Question 8
8. A room with which type of surface will most likely produce an echo? (1 point)
Responses

glass
glass

foam
foam

dirt
dirt

carpet
carpet
Question 9
9. A builder wants to make a room soundproof in a new home. The builder should use materials that ________________________.(1 point)
Responses

reflect sound waves and prevent echoes
reflect sound waves and prevent echoes

reflect sound waves and create echoes
reflect sound waves and create echoes

absorb sound waves and create echoes
absorb sound waves and create echoes

absorb sound waves and prevent echoes

Answer 1

6. Photoreceptors in the eye detect visible light, which is part of the wider electromagnetic spectrum.

7. The water is not a smooth surface after the rock is dropped in the pond.

8. glass

9. absorb sound waves and prevent echoes