Why are metal kettle handles covered with cane or plastic?
  • To conduct heat efficiently
  • To prevent burning hands
  • To make the kettle lighter
  • To store heat
In winter, wearing more layers of clothing keeps us warmer because:
  • More layers absorb heat
  • Air trapped between layers prevents heat loss
  • Thick layers are better conductors
  • Darker clothes trap sunlight
What is infiltration in the water cycle?
  • Evaporation of water from rivers
  • Condensation of water vapour into clouds
  • Water seeping into the ground
  • Precipitation from clouds
Aquifers are:
  • Underground layers that store water
  • Surface water lakes
  • Water in rivers
  • Ice caps
Sea breeze occurs during the:
  • Morning
  • Night
  • Day
  • Evening
Land breeze occurs during the:
  • Morning
  • Night
  • Day
  • Afternoon
Which process in the water cycle releases water vapour from plants?
  • Evaporation
  • Condensation
  • Transpiration
  • Precipitation
Concrete surfaces reduce seepage of water because:
  • Concrete absorbs water quickly
  • Concrete is porous
  • Concrete is impermeable
  • Concrete allows infiltration
When a hot metal spoon is placed in a cup of tea, the spoon becomes hot due to:
  • Convection
  • Conduction
  • Radiation
  • Reflection
Hot steam rising from tea demonstrates:
  • Conduction
  • Convection
  • Radiation
  • Reflection
Which tent is preferred on a hot summer afternoon?
  • Black tent
  • White tent
  • Any tent
  • Transparent tent
Which tent is preferred in winter for warmth?
  • Black tent
  • White tent
  • Any tent
  • Transparent tent
How does a thermos flask keep tea hot?
  • By conduction
  • By convection
  • By reducing heat loss through insulation
  • By radiation
Which of these methods of heat transfer can occur without a medium?
  • Conduction
  • Convection
  • Radiation
  • All of the above
Heat is best described as a form of what?
  • light emitted from hot sources
  • force causing acceleration in objects
  • energy transferred between objects
  • matter in moving particles
Which term means the measure of how hot or cold something is?
  • heat in a material
  • radiation from the Sun
  • conduction through solids
  • temperature of the object
Heat transfer through solids without bulk movement of particles is called what?
  • convection moving fluids
  • radiation through empty space
  • conduction
  • evaporation changing state
Which process can transfer heat without any medium present?
  • convection in liquids or gases
  • conduction through contact
  • infiltration into soil
  • radiation traveling as waves
Choose the odd one out: Copper, Iron, Aluminium, Plastic. Which material does not fit and why?
  • Aluminium, it absorbs radiation poorly
  • Plastic, it is a poor conductor of heat
  • Copper, it does not conduct electricity
  • Iron, it is not a metal like others
During boiling, warm water rises because it becomes what compared to cooler water?
  • denser than the cooler water
  • less conductive than the cooler water
  • less dense than the cooler water
  • more viscous than the cooler water
Sea breeze most commonly occurs when?
  • in winter when oceans freeze
  • only during storms with strong winds
  • during the day due to land heating faster
  • at night due to land cooling faster
Which natural process gradually releases water from an ice stupa during warmer months?
  • Condensation of water vapor
  • Sublimation of solid ice
  • Melting and phase change
  • Freezing of liquid streams
A village builds ice stupas each winter to store meltwater for irrigation. If spring temperatures rise faster than usual, which plan best ensures a steady water supply into summer?
  • Break the ice to increase surface area
  • Place stupas on sunny slopes for quick melt
  • Color the ice dark to absorb more heat
  • Construct taller stupas to melt more slowly
Conduction is the transfer of heat through...
  • radiation
  • absence of particles
  • movement of liquid
  • direct contact between particles
What is an example of conduction?
  • When a cat sits on a warm blanket
  • When a person blows on hot soup to cool it down
  • When a plant absorbs sunlight for photosynthesis
  • When a metal spoon is placed in a hot cup of coffee
What is convection and how does it work?
  • Convection is the transfer of heat through solid materials like metal or wood.
  • Convection is the transfer of heat through the movement of fluids (liquids or gases).
  • Convection works by the movement of solids instead of fluids.
  • Convection is the transfer of heat through electromagnetic waves.
Give an example of convection in everyday life.
  • Baking cookies in the oven
  • Lighting a candle
  • Boiling water in a pot
  • Freezing water in the freezer
How does convection occur in liquids and gases?
  • Warmer particles rise and cooler particles sink
  • Particles move from left to right
  • Particles move randomly in all directions
  • Particles move in a circular motion
What is radiation and how does it differ from conduction and convection?
  • Radiation is the transfer of heat through solid materials.
  • Radiation is the transfer of heat through chemical reactions.
  • Radiation is the transfer of heat through sound waves.
  • Radiation is the transfer of heat through electromagnetic waves.
What are some examples of radiation in nature?
  • Infrared radiation, ultraviolet radiation, radio waves
  • Sunlight, heat from a fire, warmth from a hot sidewalk
  • Microwaves, X-rays, Gamma rays
  • Visible light, sound waves, magnetic fields
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0