NC Physical Science EOC Release 2018: Part III

How does the energy of ultraviolet radiation compare to the energy of microwaves?

• Ultraviolet radiation has less energy than microwaves, because ultraviolet radiation has a lower frequency.

• Ultraviolet radiation has more energy than microwaves, because ultraviolet radiation has a higher frequency.

• Microwaves have less energy than ultraviolet radiation, because microwaves have shorter wavelengths.

• Microwaves have more energy than ultraviolet radiation, because microwaves have longer wavelengths.

Tags

NGSS.HS-PS4-1

A certain wave has compressions and rarefactions. How should this wave be classified?

• as a longitudinal wave

• as a surface wave

• as a transverse wave

• as an electromagnetic wave

Which statement describes the wave interactions in sound navigation and ranging (SONAR)?

• Sound is transmitted through the water and diffracted by hard surfaces.

• Sound is transmitted through the water and reflected by hard surfaces.

• Sound is diffracted through the water and transmitted by hard surfaces.

• Sound is diffracted through the water and reflected by hard surfaces.

Tags

NGSS.MS-PS4-2

A wave has a frequency of 4.0 Hz. If it is traveling at a velocity of 20 m/s, what is the wavelength of the wave?

• 80 M

• 16 M

• 5.0 M

• 0.2 M

Which diagram correctly shows how electrically charged balls will act?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If a wave has a frequency of 0.4 Hz and a wavelength of 15 m, what is its velocity?

• 0.2 m/s

• 6 m/s

• 38 m/s

• 60 m/s

Tags

NGSS.HS-PS4-1

A circuit has 2.25 amps of current and a resistance of 4.00 Ω. What is the voltage difference across the circuit?

• 9.00 V

• 6.26 V

• 1.78 V

• 0.56 V

A copper wire is connected across a constant voltage source. Which change will cause an increase in the current flowing through the wire?

• an increase in the length of the wire

• an increase in the resistance of the wire

• an increase in the diameter of the wire

• an increase in the insulation around the wire

Which will cause an electromagnetic solenoid to increase its strength?

• replacing the wire with an insulator inside the solenoid

• increasing the temperature surrounding the solenoid

• increasing the number of wire coils in the solenoid

• removing the iron core from the solenoid

Tags

NGSS.HS-PS2-5

How could the output voltage of an electrical generator be increased?

• by reducing the generator’s rotational speed

• by reducing the mechanical work put into the generator

• by increasing the resistance of the coils in the generator

• by increasing the number of coils in the generator’s electromagnet