Energy Transformations and Wave Properties

When Daniel uses a battery to power his flashlight during a camping trip, which type of energy transformation occurs?

• Chemical energy to thermal energy

• Chemical energy to electrical energy to radiant energy

• Electrical energy to mechanical energy

• Nuclear energy to thermal energy

Tags

NGSS.MS-PS3-5

• 49 J

• 98 J

• 196 J

• 245 J

Tags

NGSS.MS-PS3-2

Scarlett is studying sound waves in her physics class. She learns that a wave has a frequency of 500 Hz and a speed of 1500 m/s. What is its wavelength?

• 3 m

• 0.3 m

• 30 m

• 300 m

Tags

NGSS.HS-PS4-1

Rohan is observing how water waves behave when they encounter a small boat in a pond. Explain how diffraction affects the behavior of the waves in this scenario.

• Waves are absorbed by the boat.

• Waves are reflected back in the opposite direction.

• Waves bend around the boat and spread out.

• Waves increase in speed as they pass the boat.

Tags

NGSS.MS-PS4-2

Abigail is sitting in her backyard and feels warmth on her skin from the sun. Identify the type of heat transfer that occurs in this scenario.

• Conduction

• Convection

• Radiation

• Insulation

Emma is observing waves on a string. Which of the following is a characteristic of the waves she is observing?

• Particles move parallel to the direction of wave propagation.

• Particles move perpendicular to the direction of wave propagation.

• Waves require a medium to travel through.

• Waves cannot travel through a vacuum.

Rohan is at a concert where a sound wave travels through air at a speed of 340 m/s. If the frequency of the wave is 170 Hz, what is its wavelength?

• 0.5 m

• 2 m

• 5 m

• 20 m

Tags

NGSS.HS-PS4-1

Aria and Liam are observing water waves in a pool. Describe how constructive and destructive interference affect the amplitude of these waves.

• Constructive interference decreases amplitude, while destructive interference increases it.

• Constructive interference increases amplitude, while destructive interference decreases it.

• Both types of interference increase amplitude.

• Both types of interference decrease amplitude.

Tags

NGSS.MS-PS4-1

During a science class, Emma and Liam were discussing which part of the electromagnetic spectrum has the highest energy. Can you help them find the answer?

• Radio waves

• Infrared waves

• Ultraviolet waves

• Gamma rays

Tags

NGSS.HS-PS4-4

Luna is conducting an experiment to find the specific heat capacity of a substance. She finds that 500 J of heat is required to raise the temperature of 2 kg of the substance by 5°C. Calculate the specific heat capacity of the substance.

• 25 J/kg°C

• 50 J/kg°C

• 100 J/kg°C

• 125 J/kg°C

Tags

NGSS.MS-PS3-4