WorksheetsConcept Check Chapter 9 Heat with TIMMS
Total questions: 20
Worksheet time: 10mins
A gas is heated and its temperature increases.
What happens to the gas molecules?
They get bigger.
They vibrate faster.
They move slower.
They Increase in number.
The figure shows a glass tube open at one end and connected to a closed glass sphere at the other end. The equipment is partly filled with water, as shown, so that there is air above the water in the sphere. The water in the tube reaches level X.
Th e air in the glass sphere is then heated by a hair dryer. What will be the water level in the open glass tube after the sphere is heated?
Choose TRUE or FALSE for the following statement.
An object become warm when the object absorb heat.
TRUE
FALSE
Choose TRUE or FALSE for the following statement.
100 mL of water at 50°C has the same quantity of heat as 75 mL at 50°C.
TRUE
FALSE
Choose TRUE or FALSE for the following statement.
Heat flow from cold region to hot region.
TRUE
FALSE
Choose TRUE or FALSE for the following statement.
A longer time is needed to heat the smaller volume of water in beaker B.
TRUE
FALSE
Choose the best term for the statement below.
Heat flow through solid medium.
Conduction
Convection
Radiation
Choose the best term for the statement below.
Heat flow through air( gas) medium.
Conduction
Convection
Radiation
Choose the best term for the statement below.
Heat flow through liquid medium.
Conduction
Convection
Radiation
Choose the best term for the statement below.
Heat flow through without medium (vacuum).
Conduction
Convection
Radiation
When you put an ice cube in a glass of warm tea, which of the following happens?
Cold flows from the ice cube into the tea.
Cold flows from the ice cube into the tea and heat flows from the tea into the ice cube.
Heat flows from the tea into the ice cube.
Neither heat nor cold flows. Only temperature flows
between the ice and the tea.
A typical thermos bottle has a thin vacuum space between the shiny inner flask (which holds a liquid) and the shiny protective outer flask, often stainless steel. The vacuum space is excellent at preventing ......
conduction.
convection
radiation.
conduction and convection
conduction, convection, and radiation
A closed cylinder with a piston on the top contain a gas with initial volume. The piston is pushed down and the volume is decreased.
What happen to the pressure of the gas after the piston is pushed down?
The pressure increases.
The pressure decreased.
The pressure does not change.
Two glass were stuck together. Choose the relevant method to separate the glass.
Immerse the bottom glass in iced water.
Pour cold iced water inside the top glass
Immerse the bottom glass in hot water.
Pour hot boiling water inside the top glass
Which fur coat will keep your body temperature the highest?
White fur coat.
Black fur coat.
Grey fur coat.
Based on the diagram, which can will show higher temperature ?
Can X
Can Y
Which umbrella will keep you cool during a hot day?
Two bimetallic strip were set up and heated. After 15 minutes both bimetallic trip were in condition as in the diagram.
Arrange metal S, T, and U based on their decreasing rate of expansion.
U > T > S
S > T > U
T > U > S
S > U > T
An experiment were conducted by putting a 25°C metal sphere into a boiling water. After 2 minutes, the water temperature drop. Explain.
Heat from the water flows into the metal sphere.
Heat from the metal sphere flows into the water.
Temperature from the water flow into the metal sphere.
Coldness from the metal sphere displace heat of the water.
On a rainy, cold day, Azmin said he feel more confortable and warm compared to Azman. Explain.
Black color absorb heat better compare with white color.
Black colour is poor heat radiator than white colour.
White color absorb heat better compare with black color.
White colour is poor heat radiator than black colour
