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Course: Alhussan Physics — Stage 7
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Alhussan Physics — Stage 7

Chapter 1: Energy

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Chapter 2: Forces

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Chapter 3: Sound

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Chapter 4: Electricity

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Chapter 5: The Earth in Space

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Quiz

Physics 1.2 Asking questions about energy — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Energy = 4.2 × 100 g × 30 °C. Energy in J?
12,600 J
126 J
3000 J
420 J
2.
Which is the correct definition of “Variable”?
Fixed point the pendulum swings from.
Distance per second, in m/s.
A factor that can change.
Time for one complete swing there and back.
3.
Which term matches this definition? “Changing only one variable.”
Fair test
Efficiency
KE equation
Metabolism
4.
Temperature rise of 100 cm³ water heated by fuels for 2 min. What is the value for Paraffin?
Dr Dabour Hub Academy - figure 1
25
22
17
11
5.
Which is the correct definition of “Prediction”?
What you expect to happen.
g = 10 N/kg on Earth.
Practical work to answer a question.
Where energy is held, e.g. chemical or kinetic.
6.
Water rose from 22 °C to 45 °C. Rise?
−23°C
67°C
45°C
23°C
7.
Which is the correct definition of “Fair test”?
Extension is proportional to force up to the limit.
The mass at the end of a pendulum.
1000 joules.
Changing only one variable.
8.
Which statement is NOT correct?
Energy cannot be measured directly with a single meter.
The volume of water is a control variable.
Predictions are random guesses.
A hypothesis must be testable.
9.
Which statement is NOT correct?
Distance from flame to beaker should be kept the same.
"Which city uses most coal?" can be answered by research.
Water volume can vary in a fair test.
Evidence can support a hypothesis.
10.
Water rose from 20 °C to 38 °C. Rise?
−18°C
18°C
58°C
38°C
11.
Coal used by cities (million t/year). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
12.
Energy = 4.2 × 100 g × 24 °C. Energy in J?
2400 J
101 J
420 J
10,080 J
13.
Readings 24, 25, 23 °C. Mean?
72.0°C
24.0°C
23.5°C
−1.0°C
14.
Water rose from 22 °C to 38 °C. Rise?
60°C
38°C
16°C
−16°C
15.
Which statement is correct?
Measuring the same thing several times helps spot anomalies.
Internet data is primary.
One measurement is enough.
Water volume can vary in a fair test.
16.
Which statement is correct?
Hypotheses need not be testable.
A thermometer measures energy directly.
All questions can be answered by science.
"Which city uses most coal?" can be answered by research.
17.
Which statement is NOT correct?
Not every question can be answered by science.
Temperature rise is the independent variable.
A hypothesis must be testable.
The fuel type is the independent variable.
18.
Readings 25, 23, 23 °C. Mean?
−2.0°C
71.0°C
24.0°C
23.7°C
19.
Which statement is NOT correct?
A thermometer measures temperature.
All questions can be answered by science.
Scientists ask questions to find answers.
Evidence can support a hypothesis.
20.
Types of questions asked by a class. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 3
A
B
C
D
21.
Water rose from 20 °C to 45 °C. Rise?
45°C
25°C
65°C
−25°C
22.
Energy = 4.2 × 200 g × 24 °C. Energy in J?
4800 J
840 J
20,160 J
101 J
23.
Repeat readings of temperature rise (°C). What is the total of all the values?
Dr Dabour Hub Academy - figure 4
90
80
100
25
24.
Water rose from 20 °C to 42 °C. Rise?
42°C
62°C
−22°C
22°C
25.
Types of questions asked by a class. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
26.
Temperature rise of 100 cm³ water heated by fuels for 2 min. Which has the smallest value?
Dr Dabour Hub Academy - figure 6
Ethanol
Butane
Wax
Paraffin
27.
Which is the correct definition of “Independent variable”?
What you change.
Maximum distance from the middle position.
Energy stored in fuels, food and batteries.
Unit of energy (J).
28.
Which term matches this definition? “A view that cannot be tested by science.”
Opinion
Dependent variable
Elastic potential energy
Metabolism
29.
Which is the correct definition of “Opinion”?
A view that cannot be tested by science.
Decrease in length when squashed.
Time for one complete swing there and back.
Maximum distance from the middle position.
30.
Coal used by cities (million t/year). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
31.
Types of questions asked by a class. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
32.
Which is the correct definition of “Control variable”?
Energy between magnets.
What you keep the same.
A view that cannot be tested by science.
Boxes for stores and circles for transfers.
33.
Coal used by cities (million t/year). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 9
A
B
C
D
34.
Which statement is NOT correct?
"Should fossil fuels be used to cook?" involves opinions.
Hypotheses need not be testable.
Distance from flame to beaker should be kept the same.
The temperature rise is the dependent variable.
35.
Temperature rise of 100 cm³ water heated by fuels for 2 min. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
36.
Types of questions asked by a class. What is the total of all the values?
Dr Dabour Hub Academy - figure 11
18
39
34
44
37.
Which term matches this definition? “What you measure.”
Metabolism
Dependent variable
Elastic potential energy
Electrical pathway
38.
Repeat measurements make results more ____.
wrong
reliable
random
biased
39.
Predictions should be based on ____.
guesses
wishes
scientific knowledge
votes
40.
Scientists ask questions to ____.
find answers
sell goods
vote
win arguments
41.
"Should fossil fuels be used to cook?" involves ____.
experiments only
measurements only
fair tests
opinions
42.
The fuel type is the ____ variable.
dependent
control
independent
random
43.
True or false? In a fair test only one variable is changed.
True
False
44.
True or false? Temperature rise is the independent variable.
True
False
45.
True or false? Energy cannot be measured directly with a single meter.
True
False
46.
True or false? "Should fossil fuels be used to cook?" involves opinions.
True
False
47.
True or false? Change several variables in a fair test.
True
False
48.
True or false? The temperature rise is the dependent variable.
True
False
49.
True or false? Internet data is primary.
True
False
50.
True or false? One measurement is enough.
True
False
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Part of Chapter 1: Energy — see every lesson and quiz in this unit.
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