Revision of maths skills
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Lesduur is: 50 minOnderdelen in deze les
Slide 1 - Tekstslide
What is the law of conservation of energy?
A
Energy cannot be created or destroyed
B
Energy can only be created
C
Energy can be created and destroyed
D
Energy can only be destroyed
Slide 2 - Quizvraag
Which of the following is an example of the conservation of energy?
A
A moving car
B
A burning candle
C
A swinging pendulum
D
A rolling ball
Slide 3 - Quizvraag
What happens to the total energy in a closed system?
A
It does not change
B
It remains constant
C
It increases over time
D
It decreases over time
Slide 4 - Quizvraag
What is the equation for work?
A
work = power x time
B
work = velocity x time
C
work = force x distance
D
work = mass x acceleration
Slide 5 - Quizvraag
What is the unit of force in the equation?
A
distance
B
work
C
time
D
force
Slide 6 - Quizvraag
What happens to the work done if the distance is increased?
A
The work done remains the same
B
The work done becomes negative
C
The work done decreases
D
The work done increases
Slide 7 - Quizvraag
What is the formula to calculate distance?
A
Distance = Speed - Time
B
Distance = Speed ÷ Time
C
Distance = Speed + Time
D
Distance = Speed × Time
Slide 8 - Quizvraag
What is the formula for efficiency?
A
Efficiency = useful energy output / total energy input
B
Efficiency = useful energy output + total energy input
C
Efficiency = total energy input / useful energy output
D
Efficiency = useful energy output * total energy input
Slide 9 - Quizvraag
How is efficiency calculated?
A
By dividing useful energy output by total energy input
B
By multiplying useful energy output with total energy input
C
By subtracting useful energy output from total energy input
D
By adding useful energy output and total energy input
Slide 10 - Quizvraag
What does efficiency measure?
A
The difference between useful energy output and total energy input
B
The useful energy output
C
The ratio of useful energy output to total energy input
D
The total energy input
Slide 11 - Quizvraag
What is the formula for power?
A
power = energy transferred - time
B
power = energy transferred + time
C
power = energy transferred * time
D
power = energy transferred / time
Slide 12 - Quizvraag
If the energy transferred is 500 Joules and the time taken is 10 seconds, what is the power?
A
50 Watts
B
500 Watts
C
50 Joules
D
5 Watts
