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WorksheetsThe Ultimate BIG BAD N5 Engineering Science Quiz
Total questions: 45
Worksheet time: 23mins
A 230 kg weight is held 4 m above the ground. What is its potential energy?
9016kJ
11kJ
9kJ
9200J
An electric cars batteries are charged for 40 minutes using a 230V 12A supply. How much electric energy is used?
6624MJ
7MJ
6.62MJ
6.62kJ
Calculate the heat energy gained by 2kg of water if it is raised from 25⁰C to 80⁰C
670kJ
209kJ
500kJ
461kJ
A turbine is used to drive a 230v electrical generator. If the output current is 12A, how much electrical energy does the generator produce in 1 hour?
936MJ
9.936kJ
9.9MJ
9.9kJ
A 230 kg weight is held 4 m above the ground. What is its potential energy?
9kJ
11kJ
9016kJ
9200J
A crane raises a load of 500kg at a speed of 45m/s. Determine the kinetic energy of the load.
506J
506250kJ
506MJ
506kJ
Calculate the amount of work done when a force of 150 newtons is used to push a car 20 metres.
3kJ
3000kJ
3200J
4J
What is an advantage of wind energy?
Turbines can be harmful to wildlife
No harmful gases are produced
You can always know when there will be wind
Everyone thinks turbines look good
A 12 year old with a mass of 45 kg climbs up a wall that is 12m in height. Calculate the potential energy he has when he reaches this height
5200kJ
5.2kJ
30J
52kJ
A 25m length of wire was stretched by 0.12m when fully tensioned. Calculate the strain in the wire?
0.00048
0.00048m
0.048
48m
A cable has an original length of 2.7m. Calculate the change in length of the cable when a strain of 0.0030 is experienced.
8.1mm
8.1
81m
8
What is the law of conservation of energy?
Energy cannot be easily harnessed
Energy can easily be destroyed
Energy should be stopped
Energy cannot be created or destroyed. It can only be changed from one form to another.
What is a carbon footprint?
The name of the hole in the atmosphere
The burning embers left by burning fossil fuels
The mark left once we have stepped on carbon
The measurement of the total greenhouse gas emissions that are caused directly and indirectly by a person or organisation
What is one positive environmental impact of a wind farm?
They will become a tourist attraction
People don't like the look of them
It is not renewable
No need to remove fossil fuels from the ground
The greenhouse effect is
The greenhouse effect is the way in which heat is trapped close to Earth's surface by “greenhouse gases.”
Uses greenhouse energy to prevent the world from natural disasters
Destroys energy
Saves energy
What can YOU do to save energy
Switch off lights
Switch off stand by
Have a shower instead of a bath
Charge your phone three times per day
What is a main disadvantage of tidal energy?
You cannot predict when it will create energy
The tide only comes in twice a day
It frequently breaks
The tide might not be strong
Ultimately, where does energy for fossil fuels and renewables come from?
The sun
Space
The Earth
Us
Coal, Oil and Gas are collectively known as
Greenhouse Fuels
Fossil Fuels
COG fuels
Renewable Energy Fuels
What is an advantage of wind energy?
No harmful gases are produced
Everyone thinks turbines look good
Turbines can be harmful to wildlife
You can always know when there will be wind
Which of the following is a finite energy source?
Sun
Wind
Water
Coal
Energy is measured in
Newtons
Joules
Meters
Seconds
What is the work done when a 50kg bag of sand is moved 20 metres horizontally?
980 Joules
9500 Joules
9800 Joules
0 Joules
How much work is done when a force of 500N is used to pull a load 4m?
2000 Joules
1500 Joules
500 Joules
2500 Joules
Calculate the work done by a fork-lift truck that lifts a pallet of bricks with a mass of 740kg up to a height of 2m.
15000 Joules
7300 Joules
14480 Joules
3700 Joules
At what height must a drum of mass 50kg be suspended above the ground if it possesses 2kJ of potential energy?
3.9 meters
4.08 meters
4.1 meters
3.1 meters
Calculate the potential energy available from a reservoir holding 1800 litres of water at a height of 260m. (Note: 1 litre = 1kg)
4586400 Joules
4600,000 Joules
4,600 Joules
46,800 Joules
A person of mass 80kg rides on a roller coaster. If the start height is 50m and the end height is 5m what is the change in potential energy between the start and end? Give your answer to 2 significant figures
35,200 Joules
3,520 Joules
35000 Joules
35,200,000 Joules
During a sheet metal process, if 50kg ingots are passed along rollers at a speed of 0.5m/s, what is the formula to calculate the kinetic energy of each ingot?
6.25 J
6.3 mJ
6 J
6.3 J
A racing car drives around a circuit at a speed of 50ms^-1. If the car has a kinetic energy of 500kJ, what formula should be used to calculate the mass of the car?
4000 kg
400 J
400 m
400 kg
How much electrical energy is used by a 230V, 12A hand drier activated for 30 seconds? Give answer to 2 s.f.
82800 J
82800 mJ
83000 J
83000 mJ
What current can be drawn from an electrical generator that delivers energy at a rate of 6kJ per second if the voltage supplied is 110 volts? Give your answer to 2 s.f.
55 A
54.545 A
54 A
54.545 J
For how long has a 110V, 30A d.c. motor been in operation if it has used 1.98 MJ of electrical energy?
300 seconds
60 seconds
180 seconds
600 seconds
What is the heat energy required to heat 2kg of water from 20°C until it boils (100°C)? Give answer to 2 s.f.
670800 J
670000 J
660000
668800 J
If 57kJ of heat energy is supplied to 1.7kg of oil having a specific heat capacity of 2700Jkg^-1K^-1, and the initial temperature of the oil is 3°C, what will the final temperature be?
20°C
12°C
50°C
15°C
Air at a pressure of 1.4 N mm−2 is supplied to a cylinder. This results in an outstroking force of 560 N. Calculate the area of the piston
200 mm2
700 mm2
400 mm2
9000mm2
A cylinder is supplied with an air pressure of 3.7 N mm−2 and the piston has an outstroking force of 700 N. Calculate the area of the piston in the cylinder.
187 mm2
1800 mm2
190 mm2
75 mm 2
A piston has a diameter of 69 mm and the piston rod has a diameter of 4mm. Calculate the effective area of the piston when it instrokes. (round to nearest 100)
14900mm2
5000mm2
204 mm2
-204 mm 2
Calculate the force applied by a piston with an area of 5600mm, when it instrokes if air is supplied at a pressure of 1.8N mm−2.
10kN
11kN
80N
10,080kN
Air at a pressure of 5.6 N mm−2 is supplied to a cylinder. This results in an outstroking force of 900 N. Calculate the area of the piston
190 N
160 mm2
160 N
190 mm 2
A cylinder is supplied with an air pressure of 9 N mm−2 and the piston has an outstroking force of 500 N. Calculate the area of the piston in the cylinder.
90kN
55N
56 mm2
78 mm2
A piston has a diameter of 90 mm and the piston rod has a diameter of 14mm. Calculate the effective area of the piston when it instrokes.
7500mm2
7400mm2
70mm2
8100mm2
Calculate the force applied by a piston with an area of 9000mm, when it instrokes if air is supplied at a pressure of 6.7N mm−2.
6 mm2
60kN
60N
6000kN
Calculate the force applied by a piston with an area of 3500mm, when it instrokes if air is supplied at a pressure of 9N mm−2
32kN
39000N
29kN
3N
A piston has a diameter of 100 mm and the piston rod has a diameter of 25mm. Calculate the effective area of the piston when it instrokes. (round to nearest 100)
29400mm2
30000mm2
29000mm2
29400N
