Curriculum
Course: Alhussan Physics — Stage 7
Login

Curriculum

Alhussan Physics — Stage 7

Chapter 1: Energy

0/19

Chapter 2: Forces

0/16

Chapter 3: Sound

0/10

Chapter 4: Electricity

0/15

Chapter 5: The Earth in Space

0/22
Quiz

Physics 1.1 What is energy? — Quiz

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 50
  • Passing grade: B+
Start Quiz
1.
Energy in fuels (MJ per kg). What is the total of all the values?
Dr Dabour Hub Academy - figure 1
142
289
319
259
2.
1 kJ = ____ J.
100
1000
1 000 000
10
3.
Energy helps explain ____.
what can happen
everything
why things happen
nothing
4.
Which is the correct definition of “Kilocalorie”?
Boxes for stores and circles for transfers.
Energy transferred to unwanted stores.
What you measure.
Old food energy unit; 1 kcal ≈ 4.2 kJ.
5.
Which term matches this definition? “Shows energy per 100 g in kJ.”
Elastic potential energy
Food label
Period
Thermal energy
6.
Daily energy needs (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
7.
A food has 1500 kJ per 100 g. Energy in 250 g?
3750 kJ
1750 kJ
6 kJ
375,000 kJ
8.
Which term matches this definition? “An older unit for the energy in food, equal to 4.2 kJ.”
Newton
Kilowatt
Kilocalorie (kcal)
Joule
9.
Energy used per hour in activities (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 3
A
B
C
D
10.
Daily energy needs (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
11.
Which statement is NOT correct?
Energy in = energy out keeps body mass steady.
1 MJ = 1000 kJ.
Energy explains why things happen.
Energy from fuels is needed for transport and producing electricity.
12.
Which term matches this definition? “1 000 000 joules.”
Megajoule
Kilocalorie
Gravitational potential energy
Dependent variable
13.
Which statement is correct?
Energy from food is needed to walk, run, grow and stay alive.
Energy explains why things happen.
1 kJ = 100 J.
Apples have more energy than nuts.
14.
True or false? 1 kJ = 100 J.
True
False
15.
Daily energy needs (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
16.
Energy in food is stored as ____ energy.
kinetic
chemical
nuclear
elastic
17.
Energy used per hour in activities (kJ). Which has the smallest value?
Dr Dabour Hub Academy - figure 6
Walking
Sitting
Sleeping
Cycling
18.
Convert 450 J into kilojoules.
4.50 kJ
450000.00 kJ
0.45 kJ
45.00 kJ
19.
Which statement is NOT correct?
Batteries store kinetic energy.
1 kcal is about 4.2 kJ.
Food labels give energy in kJ.
1 kJ = 1000 J.
20.
Energy used per hour in activities (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
21.
Which is the correct definition of “Megajoule”?
1 000 000 joules.
Force per unit extension.
Shows energy per 100 g in kJ.
Energy a person uses per day.
22.
True or false? Energy from fuels is needed for transport and producing electricity.
True
False
23.
Which statement is NOT correct?
1 kJ = 1000 J.
Wood is a fuel.
Food energy is kinetic.
Energy helps explain what can happen.
24.
True or false? Wood is a fuel.
True
False
25.
True or false? Eating extra energy causes weight loss.
True
False
26.
Which term matches this definition? “Energy a person uses per day.”
Mass
Compression
Energy need
GPE equation
27.
Energy in fuels (MJ per kg). What is the value for Coal?
Dr Dabour Hub Academy - figure 8
66
38
19
61
28.
Which term matches this definition? “Old food energy unit; 1 kcal ≈ 4.2 kJ.”
Opinion
Pendulum
Useful energy
Kilocalorie
29.
Energy in 100 g of foods (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 9
A
B
C
D
30.
Energy in 100 g of foods (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
31.
Energy in fuels (MJ per kg). What is the value for Wood?
Dr Dabour Hub Academy - figure 11
46
30
55
16
32.
Energy used per hour in activities (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 12
A
B
C
D
33.
Convert 4 kJ to joules.
400 J
40,000 J
4000 J
4 J
34.
Nuts contain ____ energy per 100 g than apples.
the same
no
less
more
35.
True or false? Energy in = energy out keeps body mass steady.
True
False
36.
A food has 2500 kJ per 100 g. Energy in 50 g?
125,000 kJ
1250 kJ
2550 kJ
50 kJ
37.
Energy in 100 g of foods (kJ). Which has the greatest value?
Dr Dabour Hub Academy - figure 13
Apple
Rice
Nuts
Bread
38.
Energy in fuels (MJ per kg). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 14
A
B
C
D
39.
Daily energy needs (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 15
A
B
C
D
40.
Which is the correct definition of “Metabolism”?
Chemical reactions keeping you alive.
Energy spreading to the surroundings as wasted thermal energy.
What you measure.
Practical work to answer a question.
41.
True or false? The energy in a fuel tells you how far a car could go.
True
False
42.
Which statement is NOT correct?
Energy in food is stored as chemical energy.
Children need energy to grow.
The energy in a fuel tells you how far a car could go.
Sleeping uses more energy than running.
43.
Walking uses 1000 kJ/h. Energy for 2 h?
2000 kJ
500 kJ
1002 kJ
20,000 kJ
44.
A snack has 1750 kJ. Minutes of running (3500 kJ/h) to use it?
300 min
2 min
30 min
105,000 min
45.
Energy in 100 g of foods (kJ). About how many times bigger is Nuts than Apple?
Dr Dabour Hub Academy - figure 16
5.4
16.1
21.4
10.7
46.
Which statement is NOT correct?
1 kcal is about 4.2 kJ.
A car moves without fuel.
Nuts contain more energy per 100 g than apples.
Eating more energy than you use can cause weight gain.
47.
True or false? A teenager needs about 10 000 kJ per day.
True
False
48.
Daily energy needs (kJ). What is the total of all the values?
Dr Dabour Hub Academy - figure 17
71,821
58,761
65,291
17,539
49.
Energy used per hour in activities (kJ). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 18
A
B
C
D
50.
Which statement is correct?
Fatty foods contain more energy per gram than vegetables.
Sleeping uses more energy than running.
Batteries store kinetic energy.
Apples have more energy than nuts.
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
Part of Chapter 1: Energy — see every lesson and quiz in this unit.
Accepted payment methods