Science Unit

Which explanation for use of concave lenses and convex lenses in eyeglasses is best?

• Concave lenses are useful for spreading light waves

• Different vision problems require one type of lens or the other.

• Both lenses are different in shape, but not in function.

• In all eyeglasses, both lenses work together to correct vision.

Which best describes an object viewed through a concave lens?

• smaller and right-side up

• larger and right-side up

• smaller and upside down

• larger and upside down

Which best describes an object viewed close up through a convex lens?

• smaller and upside down

• smaller and right-side up

• larger and upside down

• larger and right-side up

What makes laser light different from light from a bulb?

• a laser beam contains only short radio waves

• a laser beam contains a single wavelength and is focused in one direction

• a laser beam contains all of the wavelengths of visible light

• a laser beam shines in all directions

Which statement gives the best description of how sounds can change as they travel through different states of matter?

• different kinds of matter can change a sound's volume, pitch, and clarity

• different kinds of matter cannot change a sound's characteristics

• different kinds of matter can change the volume of a sound

• different kinds of matter cannot change the volume or pitch of a sound

Tags

NGSS.MS-PS4-2

A drum has sound waves that alternately squeeze together and spread apart. What type of wave is this?

• solid

• wavelength

• frequency

• compression

Why is a ruler needed to make a realistic diagram of the way a mirror reflects light?

• measuring light waves requires precision

• it's impossible to measure light without a ruler

• tools of measurement are needed to analyze light

• showing the path of light waves requires straight lines

Tags

NGSS.MS-PS4-2

Which pair of terms is related to the way we see different colors?

• reflection and absorption

• diffraction and lens

• material and refraction

• magnification and focus

Tags

NGSS.MS-PS4-2

A light bulb with straight rays drawn all the way around it illustrates what concept of light?

• light waves can travel through space

• visible light travels at high speed

• Light waves travel in straight lines in all directions

• visible light is one small part of the electromagnetic spectrum

Which statement below accurately explains the rates at which sound waves travel?

• sound waves move through all states of matter at the same rate

• sound waves move faster through gases than liquids

• sound waves move faster through liquids than solids

• sound waves move faster through a liquid than through a gas