Font size
WorksheetsPhysical Science Midterm Review
Total questions: 42
Worksheet time: 2hrs 32mins
Sort the definition and examples for motor and generator.
Converts electricity to mechanical energy (motion)
converts mechanical energy (motion) into electricity
Fan
Windmill
Escalator
Hydroelectric
An electrical current causes a coil of wire to rotate in a magnetic field.
A magnet is rotated through a coil of wire to produce an electric current.
How can the power of the electromagnet increase?
add voltage
add current
add magnets
add resistors
add loads
add coils
Which conclusion is BEST supported by the data table?
The shorter the wire, the stronger the magnetic force.
The lower the battery voltage, the stronger the magnetic force.
The higher the number of coils, the stronger the magnetic force.
The longer the wire, the weaker the magnetic force.
A balloon has a negative charge. A wall has a positive charge. What will happen when the balloon is brought near the wall?
The balloon will be attracted to the wall.
The balloon will repel from the wall
The balloon will not do anything
The balloon will spin
Match the following scenarios with their outcomes.
Attract
North pole of one magnet and south pole of another magnet
Repel
North pole of one magnet and north pole of another magnet
No reaction
Two non-magnetic objects
These objects would...
Attract
Repel
No reaction
What is the primary function of an electromagnet?
To create light using electrical energy
To generate a magnetic field when electric current flows through it. It can be turned on and off.
To store electrical energy for later use
To convert magnetic energy into electrical energy
The diagram shows a simple electrical circuit.
Which of the following would always increase the flow of current through the lights in the circuit shown? Select all that apply.
Decreasing the battery voltage
Increasing the battery voltage
Increasing the resistance of the lights.
Decreasing the resistance of the lights.
Describe a parallel circuit and a series circuit
Electricity flows along more than one pathway.
Electricity flows along one pathway.
If more light bulbs are added, the brightness remains that same
If more light bulbs are added, the light bulbs become less bright (dimmer)
If one light bulb burns out, the others will stay lit
If one light bulb burns out, the others will not longer be lit.
Sort the definition and examples for conductor and insulator.
A material that transfers an electric current.
A material that does not transfer an electric current.
iron
copper
gold
water
glass
plastic
rubber
wood
silicon
A material that has a conductivity between conductors and insulators
Which of the following methods would best test the conductivity of plastic, copper, and rubber using hot water?
Place the materials in hot water and measure how quickly the water cools.
Submerge the materials in hot water and check if they melt.
Dip one side of each substance in the hot water and touch the other side test which get warmer.
Dip the materials in hot water and observe if they change color.
During a lab a balloon was rubbed with a wooly fabric. What subatomic particle did the balloon gain?
electron
neutron
proton
nuclei
What is the major difference between static electricity and current electricity?
Current electricity involves a continuous flow of elecrons; static electricity is a sudden transfer of protons
Current electricity can be deadly; static electricity is almost always safe
In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons
Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons
Label the atom pictured:
On a roller coaster, where is greatest kinetic energy?
On a roller coaster, where is greatest potential energy?
Which items would have this energy transformation: chemical → mechanical
a candle burning
eating a big breakfast before a race
a ball bouncing
using a hairdryer
How could you increase the gravitational potential energy of an object without changing its mass or the planet's gravitational force.
Make the object larger
Lower the object towards the ground
Raise the object farther off the ground
Allow the object to roll on the ground
Determine whether the following equations is balanced or unbalanced. H4 + O2 ---> 2H2O
Balanced
Unbalanced
__P4 + __O2 --> __P2O3
_Al +_HCl --> _H2 +_AlCl3
Covalent bonds are formed when_____________.
electrons are transferred
electrons are shared
electrons vanish
protons absorb electrons
In an ionic bond, one or more electrons are (a) .
(a) contains covalent bonds.
Which of these compounds contains ionic bonds?
C6H12O6
MgCl2
H2O
CH4
Classify the examples below.
Element
H
Cl
Ar
Compound
CO2
H2O
MgO
Mixture
Salt Water & Air
Which two elements share common characteristics based on the periodic table?
Sodium and Magnesium
Chlorine and Sulfur
Argon and Neon
Calcium and Bromine
On the periodic table, elements with similar chemical characteristics are found in the same (a) .
Substance that is shiny, malleable, and a good conductor of electricity
Nonmetal
Ductile
Metalloid
Metal
Which model best represents our current understanding of the atom?
Why is the Bohr model commonly used to represent atoms, even though it is not completely accurate?
It accurately predicts the behavior of all subatomic particles in atoms.
It is simple and helps visualize how electrons orbit the nucleus in specific energy levels.
It shows the exact positions of electrons at all times.
It includes complex quantum mechanics to explain atomic behavior.
Classify the following as either examples of physical change or a chemical change.
Evaporation
Boiling Water
Grinding pepper
Dissolving sugar
Forming a percipiate (solid) that was not previously there
Rusting of iron
Burning wood
Digesting food
Classify the following as either a physical property or a chemical property.
Flammability
Reactivity
Acidity
State of matter (solid, liquid, gas, plasma)
Conductivity
Boiling Point
Chemical Bonding
Freezing Point
Pair the states of matter with their correct representations.
Solid
Liquid
Gas
Which object would have the greatest kinetic energy?
pot of boiling water
snow
a frozen water bottle
a lake
