Science 8 Year End Review - Unit C

Science 8 Year End Review - Unit C

Multiple Choice

The original theory that indicated light traveled from our eyes to the objects we see was disproven because:

• It disobeyed the law of reflection.

• We were unable to see in the dark.

• Light is split into various colours when put through a prism.

• Ole Romer's experiment demonstrated it was false.

Multiple Choice

What optical device is being shown in the attached image?

• A reflecting telescope which uses only mirrors.

• A reflecting telescope which uses mirrors and lenses.

• A refracting telescope which only uses lenses.

• A refracting telescope which uses mirrors and lenses.

Multiple Choice

The property of light that allows it to be refracted is:

• Light is a form of energy.

• Light travels in straight lines.

• Light can be reflected.

• Light can bend.

Multiple Choice

A frosted light bulb could be described as both:

• transparent and luminous

• transparent and non-luminous

• translucent and luminous

• translucent and non-luminous

Multiple Choice

Which of the following statements is correct?

• The moon is luminous.

• opaque materials create umbras.

• a penumbra is the darkest part of a shadow.

• transparent materials diffuse light slightly as it passes through.

Multiple Choice

Which image represents a transluscent object?

• None of these.

Multiple Choice

Given the attached image, which statement is correct regarding the reflected image?

• This image will be upright and enlarged.

• Moving the object towards the mirror will increase the size of the reflection.

• The image will flip right side up once it passes the centre of curvature.

• The focal point in the concave mirror is behind the mirror.

Multiple Choice

Which of the statements is true of convex mirrors?

• They are not useful if you need an upright image.

• At the point of curvature, the images they create will flip right side up.

• They are great for use in makeup mirrors.

• The virtual image will never be as large as the actual object.

Multiple Choice

Convex and concave lenses have different effects on light because:

• The light is slightly reflected in a concave lens.

• Differences in light wavelengths alter how it bends.

• The thicker the glass, the more light will refract.

• None of these.

Multiple Choice

In the case of telescopes, in order to see a larger area of space, a designer could:

• Increase the size of the mirror in a reflecting telescope.

• Increase the size of the lens in a reflecting telescope.

• Decrease the size of the mirror in a refracting telescope.

• Decrease the size of the lens in a refracting telescope.

Multiple Choice

Paralysis in the nerves that control the movement of the iris would result in:

• A reduction in the number of rods and cones in the retina.

• Difficulty adjusting to varying levels of light.

• Eventual damage to the cornea.

• Issues relaying messages to the brain through the optic nerve.

Multiple Choice

When compared to a camera, which part of the eye is most similar to the aperture?

• Iris

• Retina

• Pupil

• Lens