The final Final Exam Review

A wire is attached to a battery and coiled around an iron nail, as shown below. Which setup will produce the strongest electromagnet?

• a coil with 4 loops and a current of 40A

• a coil with 40 loops and a current of 0A

• a coil with 40 loops and a current of 40A

• a coil with 50 loops and a current of 0A

Tags

NGSS.MS-PS2-3

If the current was moving in a parallel circuit, what would happen to the current when it reaches any point?

• current splits up going in two different directions

• current remains going in one direction

• current remains the same value for each of two different directions

• voltage changes

Find a combination of resistances and voltage sources that would produce the greatest current. Which of the below combinations will produce the largest current?

• 120 V and 24 Ώ

• 120 V and 12 Ώ

• 110 V and 22 Ώ

• 110 V and 110 Ώ

A police car with the siren blaring drives toward the person on the right (R) after passing the person standing on the left (L) Which statement below would be accurate?

• The person on the right would hear a higher pitch because of a lower frequency of waves.

• The person on the left would hear a lower pitch because of a lower frequency of waves.

• The person on the right would hear a lower pitch because of the higher frequency of waves.

• The person on the left would hear a higher pitch because of a higher frequency in waves.

Light refracts when traveling from air into glass as shown below because light

• travels at the same speed in air and in glass

• frequency is greater in air than in glass

• frequency is greater in glass than in air

• travels slower in glass than in air

Tags

NGSS.MS-PS4-2

The type of wave that can be used in a lamp to keep food warm at restaurants, determine heat signatures in buildings, or even for remote controls for TV’s would be classified as…

• ultraviolet

• X-ray

• infrared

• microwaves

• radio waves

Tags

NGSS.MS-PS4-1

In which situation would diffraction be the greatest?

• large opening; long wavelength

• small opening; long wavelength

• large opening; short wavelength

• small opening; short wavelength

Tags

NGSS.HS-PS4-1

A ultraviolet wave vibrates at a frequency of 800 tHz. The wave produced by the ultraviolet wave will travel through the air as a

• longitudinal wave with air molecules vibrating parallel to the direction of travel

• transverse wave with air molecules vibrating parallel to the direction of travel

• longitudinal wave with air molecules vibrating perpendicular to the direction of travel

• transverse wave with air molecules vibrating perpendicular to the direction of travel

Tags

NGSS.HS-PS4-3

A ray of light is incident towards a plane mirror at an angle of 60 degrees with the mirror surface. What will be the angle of reflection?

• 60 degrees

• 30 degrees

• 90 degrees

• 0 degrees

Tags

NGSS.MS-PS4-2

A cyclist travels 10,000 meters at a speed of 2.5 m/sec. How long will it take to complete the trip?

• 25000 s

• 4000 s

• 0.00025 s

• 2500 s