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WorksheetsPHYSICS REVIEW #3
Total questions: 15
Worksheet time: 8mins
Which of the following represents Ohm's Law?
I = V/R
I = V x R
I = V + R
I = V - R
Heat would best be transferred by conduction between
a candle and the air
an oven and a glass dish
a stove and a copper pot
water and a wooden spoon
Refraction takes place when a light wave changes
color
frequency
intensity
speed
Which statement BEST explains the orbit of the Earth around the Sun?
the Sun is at the center of the Solar System
The Sun's mass is much greater than Earth's
Earth rotates about its axis, the Sun does not
other planets also try to move the Sun around them
What role does a batter play in a basic electromagnet design?
works as the system's wires
the electrical power supply
the circuit's main conductor
works as the system's electrical switch
When you're using a toaster, what is the SOURCE of he heat that makes the bread hot?
burning
electricity
friction
light
If a kid is playing soccer and she kicks the ball. Her kick is an example of
a pull that stops the ball
a force that changes the roll of the ball
a pull that creates the motion of the ball
a force that changes the direction of the ball
A battery uses _________ energy to generate __________ energy.
chemical; electrical
chemical; mechanical
electrical; chemical
electrical; mechanical
What would happen to a positively charged particle traveling in a straight line that moves into a magnetic field?
the particle would slow and stop moving
the particle would travel in a curved path
the particle would continue travelling in a straight line
the particle would make a right angle turn and the move to a straight line
A weight hanging from a spring will remain hanging until the weight is pulled down and released. Which of Newton's laws does this represent?
3rd law - bounce is the action force
1st law - spring is remaining at rest
2nd law - weight was not pulled hard enough to keep the spring moving
1st law - spring is at rest and pulling the weight supplies the force needed to start it moving
When voltage increases and resistance remains constant what must happen to current?
decreases
increases
remains the same
not affected by voltage and resistance
Mechanical advantage allows you to apply a force over a ________ distance to _____________ the distance an object moves.
long, decrease
short, decrease
long, increase
short, increase
Putting effort at point IV of this lever offers no mechanical advantage because
requires a smaller distance
requires a greater distance
requires a greater force
requires a smaller force
What is the mechanical advantage of a simple machine that lifts a 500N weight by applying only 100N?
10
2
4
5
Most electrical power generation converts motion unto electricity using a generator. The 2 required componets for a generator are
a turbine and a source of electrons to move
an armature free to spin and a permanent field magnet
a coil of wire and a magnet in relative motion to induce an electric current
two coils if wire connected by an iron core to create changing electric fields
