Homework WB 11th March

• Science
• Lower Secondary (Key Stage 3)

Year 7 Homework 

WB 11th March

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What unit is used to measure the intensity of sound?

1. Watt (W)
2. Decibel (dB)
3. Hertz (Hz)
4. Newton (N)

What part of the ear is responsible for transmitting sound vibrations to the brain?

1. Auricle
2. Auditory nerve
3. Cochlea
4. Eardrum

Which musical instrument produces sound by vibrating strings?

1. Piano
2. Guitar
3. Trumpet
4. Drum

What term describes the highness or lowness of a sound?

1. Timbre
2. Pitch
3. Volume
4. Frequency

How does sound travel through a medium?

1. By generating heat energy
2. By creating electrical charges
3. By causing particles to vibrate
4. By emitting light waves

What determines the pitch of a sound wave?

1. Amplitude of the wave
2. Wavelength of the wave
3. Speed of the wave
4. Frequency of the wave

How are sound waves typically represented in diagrams?

1. As a straight line
2. As a set of parallel lines
3. As a series of compressions and rarefactions
4. As a series of crests and troughs

How do crocodiles move when a baby cries?

1. Quickly away from the sound
2. Quickly and aggressively towards
3. Slowly and aggressively away
4. Slowly and aggressively towards

As well as babies which other animals are crocodiles attune to?

1. Young deer
2. Young rodents
3. Young jaguars
4. Young great apes

What do crocodiles rely on..

1. Changes in frequency
2. Changes in pitch
3. Changes in amplitude
4. Changes in tone

What is a bonobo?

1. Orangutan
2. Spider monkey
3. Pygmy Chimpanzee
4. Lemur

Exposure to loud noises causes

1. Hearing loss
2. Infected ear drums
3. Narrowed ear canals
4. Ear piercings

Which metal is disturbed in our inner ears by loud noises?

1. Magnesium
2. Potassium
3. Zinc
4. Copper

Loud noises cause..

1. Cells in the inner ear to die
2. Cells in the inner ear to reproduce too fast
3. Cells in the outer ear to die
4. Cells in the outer ear to reproduce too fast

Where does Thanos Tzounopoulos research?

1. University of York
2. University of Minnesota
3. University of Pittsburgh, Pennsylvania
4. University of Oxford

Which part of the ear helps maintain balance?

1. Semicircular canals
2. Cochlea
3. Auditory nerve
4. Eardrum

What is the function of the eustachian tube?

1. Convert sound to electrical signals
2. Amplify sound waves
3. Detect different frequencies
4. Equalize air pressure in the middle ear

Which structure collects sound waves and funnels them into the ear?

1. Pinna (auricle)
2. Round window
3. Ossicles
4. Tympanic membrane

What is the purpose of the cochlea in the ear?

1. Convert sound vibrations into electrical signals
2. Regulate air pressure
3. Maintain balance
4. Amplify sound waves

Which part of the ear transmits sound vibrations to the inner ear?

1. Semicircular canals
2. Ossicles (malleus, incus, stapes)
3. Eustachian tube
4. Auditory nerve