Middle School Science: Heat, Sound, and Motion
A science quiz covering fundamental physics concepts including heat transfer (conduction, convection, radiation), friction, and sound properties, plus basic human biology related to sound perception and vocal anatomy.
Questions
Which of the following processes requires no medium for transfer of heat?
- Convection
- Heating of a liquid
- Radiation
- Conduction
- Rolling
What is the temperature range of a clinical thermometer?
- 20 - 30 degrees
- 20 - 40 degrees
- 35 - 42 degrees
- 30 - 50 degrees
- 30 - 35 degrees
Which of the following is an insulator?
- Copper
- Plastic
- Lead
- Aluminium
- Iron
Which of the following helps to carry impulses of soundwaves to the brain so that we can perceive sounds?
- Eustachian tube
- Auditory canal
- Auditory nerve
- Vocal cord
- Eardrum
Why are woollen clothes used in winter season?
- Wool emits heat.
- Sheep was being reared there on a large scale.
- Woollen clothes are more stylish.
- No other material was available there.
- Wool is a poor conductor of heat and can trap warm air in between its fibres.
Mother is warming milk for her children. By which process does milk get warmed up?
- Condensation
- Radiation
- Convection
- Conduction
- Boiling
________ is the special shape of a body due to which it experiences the least fluid friction.
- Sliding friction
- Lubrication
- Rolling friction
- Streamlining
- Wear and tear
It was a hot summer day and five students decided to go out to the beach to play. But most of them came wearing wrong dresses for the occasion. Who has come properly dressed among these five students?
- Aryan is wearing a dress made of nylon.
- Varun is wearing cotton shirt and trousers.
- Aakash is wearing a leather jacket.
- Neeta is wearing polyester shirt and pants.
- Himanshu is wearing a woollen cardigan.
Which of the following animals produces ultrasonic sound for moving around and even to capture prey?
- Cow
- Dog
- Bat
- Lion
- Elephant
Which of the following statements is incorrect?
- Friction is caused due to interlocking of irregularities on the two surfaces in contact with each other.
- Friction is a necessary evil.
- Friction cannot be reduced.
- Static friction comes into play when we try to move an object at rest.
- Rolling friction is always less than sliding friction.
Which is the ‘voice box’ in human beings?
- Syrinx
- Auditory nerve
- Trachea
- Cochlea
- Larynx
A lady was stirring hot curry with a metal spoon. After a while, the heat of the curry reached to her hands through the spoon. By which method was it transferred?
- Convection
- . Rolling
- Radiation
- Conduction
- Heat passed to her hands through air
Many explosions occur in stars in distant galaxies. But why cannot we hear them?
- Rotation of the earth on its axis avoids these sounds.
- Sun absorbs these sounds.
- Sound cannot travel through vaccum.
- The sounds get absorbed in the star itself.
- These sounds get diverted away from earth.