2601365
Descripción
Test por Gabi Germain, actualizado hace más de 1 año
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Creado por Gabi Germain
hace más de 9 años
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Pregunta 1
Pregunta
What does the gradient on a distance-time graph represent?
Respuesta
-
Speed
-
Acceleration
-
Distance travelled
Pregunta 2
Pregunta
Velocity of an object the speed of an object in a given direction
Respuesta
- True
- False
Pregunta 3
Pregunta
What does the gradient of a velocity-time graph represent?
Respuesta
-
Acceleration
-
Speed
-
Distance
Pregunta 4
Pregunta
Distance travelled by an object can be calculated from a distance-time graph
Respuesta
- True
- False
Pregunta 5
Pregunta
What is newtons third law?
Respuesta
-
Every action has an equal and opposite reaction
-
An object will remain at rest unless acted upon by an external force
Pregunta 6
Pregunta
The combined effect of all forces acting upon an object is called the...
Respuesta
-
Resultant force
-
Drag force
-
Newton
Pregunta 7
Pregunta
If the resultant force on an object is zero it will...
Respuesta
-
remain stationary
-
accelerate in the direction of the resultant force
Pregunta 8
Pregunta
If the resultant force on an object is not zero it will...
Respuesta
-
remain stationary
-
accelerate in the direction of the resultant force
Pregunta 9
Pregunta
When a vehicle is driving at a steady speed the resistive forces balance the driving force
Respuesta
- True
- False
Pregunta 10
Pregunta
What are 3 things that could effect the drivers reaction time?
Respuesta
-
Drugs
-
Tiredness
-
Alcohol
-
Shoe colour
-
Diet
-
Exercise
Pregunta 11
Pregunta
What happens when brakes are applied on a car...
Respuesta
-
there is friction between the brakes and the wheel reducing the kinetic energy of the vehicle
-
the car speeds up
-
the friction between the brakes and wheels increase the kinetic energy of the car
Pregunta 12
Pregunta
The __________ an object moves through a fluid the __________ the frictional force that acts on it
Respuesta
-
Faster, slower
-
Faster, greater
-
Slower, greater
Pregunta 13
Pregunta
when the resultant force of an object is zero it will move at its terminal velocity
Respuesta
- True
- False
Pregunta 14
Pregunta
What might a force being applied to an object cause?
Respuesta
-
stretching or squashing
-
Changing its shape
-
Changing its volume
-
Changing its colour
Pregunta 15
Pregunta
An elastic object can't recover its original shape when stretched
Respuesta
- True
- False
Pregunta 16
Pregunta
The extension of an elastic object is directly proportional to...
Respuesta
-
The force applied
-
The mass of the object
-
The length of spring
Pregunta 17
Pregunta
When a force causes an object to move through a distance work is done
Respuesta
- True
- False
Pregunta 18
Pregunta
In a closed system the total momentum before an event is _______ to the total momentum after an event, what is this called?
Respuesta
-
Equal, Conservation of momentum
-
More, conservation of momentum
-
Equal, conservation of minstrels
Pregunta 19
Pregunta
Which type of materials rub together to become electrically charged?
Respuesta
-
Metal
-
Reactive
-
Insulating
-
Conductor
Pregunta 20
Pregunta
Losing electrons means a material becomes...
Respuesta
-
Negatively charged
-
Positively charged
Pregunta 21
Pregunta
If two objects have the same charge will they repel or attract each other?
Respuesta
-
Repel
-
Attract
Pregunta 22
Pregunta
What is the electrical symbol for a diode?
Respuesta
Pregunta 23
Pregunta
which is the current-potential difference graph?
Respuesta
Pregunta 24
Pregunta
which graph shows the current flowing through a diode?
Respuesta
-
this one
-
This one
Pregunta 25
Pregunta
Is the potential difference in a series or parallel circuit the same across each component?
Respuesta
-
Series
-
Parallel
Pregunta 26
Pregunta
Is the current in a series or parallel circuit the same across each component?
Respuesta
-
series
-
parallel
Pregunta 27
Pregunta
The current through a resistor is directly proportional to the potential difference across the resistor
Respuesta
- True
- False
Pregunta 28
Pregunta
Resistance of an LDR increases as the light intensity increases
Respuesta
- True
- False
Pregunta 29
Pregunta
What is the a.c. supply in the UK?
Respuesta
-
230V
-
230Hz
-
230
Pregunta 30
Pregunta
What colour is the live wire?
Respuesta
-
blue
-
yellow and green
-
brown
Pregunta 31
Pregunta
What colour is the neutral wire?
Respuesta
-
brown
-
yellow and green
-
blue
Pregunta 32
Pregunta
If the current in a fuse wire gets too high the fuse will melt breaking the circuit
Respuesta
- True
- False
Pregunta 33
Pregunta
when an electrical charge flows through a resistor so it cools
Respuesta
- True
- False
Pregunta 34
Pregunta
what is in the nucleus of an atom?
Respuesta
-
Protons and neutrons
-
Electrons and neutrons
-
Electrons and protons
Pregunta 35
Pregunta
What is the relative charge of a proton?
Respuesta
-
+1
-
0
-
-1
Pregunta 36
Pregunta
electrons have a relative mass of 0.005
Respuesta
- True
- False
Pregunta 37
Pregunta
Which rays are most penetrating?
Respuesta
-
Alpha
-
Beta
-
Gamma
Pregunta 38
Pregunta
Which type of radiation isnt deflected by both electric and magnetic fields?
Respuesta
-
Alpha
-
Beta
-
Gamma
Pregunta 39
Pregunta
Half life is the time taken for the number of unstable nuclei in a sample to halve
Respuesta
- True
- False
Pregunta 40
Pregunta
What are the two fissionable substances?
Respuesta
-
plutonium 239 and uranium 265
-
plutonium 239 and uranium 235
Pregunta 41
Pregunta
The nucleus undergoing fission splits into 2 smaller nuclei and two or three whats are released?
Respuesta
-
nuclei
-
electrons
-
neutrons
Pregunta 42
Pregunta
Fusion is the joining of two _____?
Respuesta
-
Neutrons
-
Electrons
-
Nuclei
Pregunta 43
Pregunta
Stars form when what from space is pulled together?
Respuesta
-
planets and dust
-
dust and rocks
-
gas and dust
Pregunta 44
Pregunta
During the main sequence period of its life cycle the star is stable as the forces are balanced
Respuesta
- True
- False
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