WorksheetsGrade 7 _ Science Month Physics
Total questions: 11
Worksheet time: 25mins
Name
Class
Date
1.
If a laboratory thermometer shows 40°R, what is the temperature in Celsius
a)
50 °C
b)
40 °C
c)
90 °C
d)
36 °C
2.
Convert 25°C into Kelvin
a)
45 K
b)
318.15 K
c)
298.15 K
d)
323.15 K
3.
Convert 25°C into Fahrenheit
a)
57 °F
b)
77 °F
c)
67 °F
d)
87 °F
4.
Ryan rubs two sticks together quickly. When he stops rubbing the sticks, he notices that they are warm to touch where he rubbed them. Which type of energy has been produced?
a)
sound energy
b)
light energy
c)
electrical energy
d)
heat energy
5.
Adhiya placed a bottle of cold milk into a cup of hot water. The cold milk becomes hotter after a while. Which one of the following explain this?
a)
The cup loses heat to the hot water.
b)
The bottle of cold milk gains heat from the cup.
c)
The bottle of cold milk loses heat to the hot water.
d)
The bottle of cold milk gains heat from the hot water.
6.
Two identical cups contain the same mass of water at 80°C. Ice cubes are added: 2 cubes in Cup A and 4 cubes in Cup B. After stirring, which statement best describes the temperature of the water?
a)
Cup A will be colder because it cools faster.
b)
Cup B will be colder because it absorbs more heat from the water.
c)
Both cups will reach the same final temperature.
d)
Cup A and B will have no temperature change because ice doesn’t absorb heat.
7.
During an experiment, two objects of different materials are heated with the same amount of energy. The metal object’s temperature rises by 20°C, while the water’s temperature rises by 5°C.
What conclusion can be drawn?
a)
Water has a lower specific heat capacity than metal.
b)
Metal has a higher specific heat capacity than water.
c)
Water requires more energy to change its temperature.
d)
Metal requires more energy to change its temperature.
8.
A student heats 100 g of water and measures the temperature rise from 25°C to 45°C. Another student heats 100 g of oil, and its temperature rises from 25°C to 65°C using the same heat energy.
Which statement is true?
a)
Water has a higher specific heat capacity than oil.
b)
Oil has a higher specific heat capacity than water.
c)
Both have the same heat capacity.
d)
The difference is due to measurement error.
9.
An iron pan and a ceramic bowl are both left in the kitchen overnight. In the morning, the iron pan feels colder to touch, even though both are at the same room temperature.
Which statement best explains this?
a)
Iron has a lower specific heat capacity than ceramic.
b)
Iron is a better conductor of heat, drawing heat faster from your hand.
c)
The ceramic bowl is warmer than the air.
d)
Iron always feels colder no matter the condition.
10.
When ice melts, the temperature remains constant at 0°C until all ice has melted. What does this show?
a)
Heat energy is not being absorbed.
b)
Heat energy is used to break molecular bonds rather than raise temperature.
c)
Temperature sensors cannot detect small changes.
d)
Ice has a very high temperature at 0°C.
11.
Ryan rubs two sticks together quickly. When he stops rubbing the sticks, he notices that they are warm to touch where he rubbed them. Which type of energy has been produced?
a)
sound energy
b)
light energy
c)
electrical energy
d)
heat energy
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