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MATTER ITS PROPERTIES & ITS TRANSFORMATION: Change of state
MATTER ITS PROPERTIES & ITS TRANSFORMATION: Heat & Thermal Insulation
MATTER ITS PROPERTIES & ITS TRANSFORMATION: Temperature
Matter: Its Properties & Transformation
THE WORLD OF SCIENCE: Base Physical Quantities, SI Units & Measuring Instruments
THE WORLD OF SCIENCE: Measurement of Density
THE WORLD OF SCIENCE: Measurements of Speed
THE WORLD OF SCIENCE: Scientific Method
THE WORLD OF SCIENCE: Simple application of measurements
The Science World
5/30 MCQs for:
MATTER ITS PROPERTIES & ITS TRANSFORMATION: Heat & Thermal Insulation
Double-glazed windows reduce heat loss by:
Convection.
Radiation.
Conduction.
Trapping air between panes.
Heat can change the state of matter. Which of the following is an example?
Steam condensing.
Water freezing.
Frost forming.
Ice melting.
What happens to matter when heat is applied?
Nothing.
It may expand, melt, or evaporate depending on the state.
It always expands.
It always contracts.
Metals expand when heated because:
Particles move slower.
Particles move faster and push each other apart.
Volume decreases.
Mass increases.
Thermal insulation is important because it:
Speeds up heat flow.
Changes the state of matter.
Prevents heat loss or gain.
Produces heat.
