Revision of maths skills

Revision of maths skills
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Slide 1: Diapositive
ScienceLower Secondary (Key Stage 3)

Cette leçon contient 13 diapositives, avec quiz interactifs et diapositive de texte.

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Revision of maths skills

Slide 1 - Diapositive

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 - Quiz

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 - Quiz

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 - Quiz

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 - Quiz

What is the unit of force in the equation?
A
distance
B
work
C
time
D
force

Slide 6 - Quiz

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 - Quiz

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 - Quiz

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 - Quiz

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 - Quiz

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 - Quiz

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 - Quiz

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

Slide 13 - Quiz