Physical Science Quizzes
What is the weight of water displaced by a 100-ton floating ship?
100 tons
What is the resistance of a 120-W incandescent lamp connected to a 120-V power supply?
120 ohms
The current through a 10 ohms resistor connected to a 120-V power supply is:
12A
A ball is moving at 4m/s and has a momentum of 48kg.m/s. What is the ball's mass?
12kg
Which one has the most atoms?
All of the above have the same number of atoms
A charged atom or molecule, one with excess or deficiency of electrons is called isotope
False
A device used for transforming electric power from one coil of wire to another by means of electromagnetic induction is called electric generator.
False
A floating object displaces a fluid equal to its own volume.
False
A homogeneous mixture in which all components are in the same phase is called suspension.
False
Ampere is a unit of electrical resistance
False
An object at rest has kinetic energy.
False
An object in motion comes to a stop without any external force.
False
Atmospheric pressure is higher at the top of a mountain than at sea level.
False
Chemical bond is the force of attraction between atoms that hold them together.
False
Chemical change is reversible.
False
Force is always expressed as a push but not as a pull.
False
Force is stated only as a push, but not as pull.
False
Force of interaction indicates that when you push an object, the object will pull you
False
Homogeneous mixture is a mixture in which the various components can be seen as individual substances.
False
In a step-up transformer, the voltage in the primary coil is higher than in the secondary coil.
False
In electric motor, the input is mechanical energy and the output is electric energy.
False
Inertia, which is the resistance of an object to a change in state of motion, applies only to objects in motion, but not to those at a stand still position.
False
Saturated solution is a solution containing the minimum amount of solute that will dissolve in the solvent.
False
The components of a mixture are chemically bonded together.
False
The greater the distance from the center of the Earth, the greater will be the weight of an object.
False
When acceleration is less than "g", it is a free-fall.
False
Wood burning into ash is a physical change.
False
A cluster of regions of aligned magnetic atoms is called magnetic domain.
True
A moving charged particle produces a magnetic field.
True
A negative ion has more electrons than protons
True
A projectile is an object at rest and at a raised location with a potential energy, but with no kinetic energy.
True
Air is a mixture of gases
True
Buoyant force is a net upward force that a fluid exerts on an immersed body.
True
Electron and proton attract each other.
True
Energy is the property of a system that enables it to do work.
True
Every object possesses inertia.
True
If two objects of different masses roll down a slope at the same velocity, the one with the larger mass will have a higher momentum.
True
Physical change is a change in which a substance changes one or more of its physical properties without transforming it into a new substance.
True
Speed is a measure of how fast something is moving.
True
Terminal velocity is a speed at which the acceleration of a falling object terminates when air resistance balances its weight.
True
The Earth's magnetic field is strong enough to deflect even cosmic rays coming from the outer space.
True
The Moon is simply a projectile circling the Earth.
True
The new material formed in chemical reaction is called product.
True
When acceleration is "g", it is a free-fall.
True
Which of the following best describes a liquid?
a constant volume but its shape is not defined
Disregarding air resistance, objects fall at constant:
acceleration
If the mass of an object does not change, a constant net force on the object produces constant:
acceleration
A moving object has:
all of these
The unit of electric current is called:
ampere
Inside a freely falling runaway elelvator, your:
apparent weight is zero
Like kinds of magnetic poles repel, while unlike kinds of magnetic poles:
attract
Any device that measures atmospheric pressure is called:
barometer
The net upward force that a fluid exerts on an immersed object is called:
buoyant force
A change in which the atoms of one or more substances are arranged into one or more new substances is called.
chemical change
A material in which atoms of different elements are bonded to one another is called:
compound
The amount of matter per unit volume is called:
density
A device that converts mechanical energy to electrical energy is called:
electric motor
A magnet whose field is produced by an electric current is called:
electromagnet
The density of a fish is:
equal to the density of water
The critical speed at which a projectile outruns gravity is called:
escape speed
The resistive force that opposes the motion or attempted motion of an object is called:
friction
Which of the following is an example of a chemical change?
gasoline being used in the engine of a car producing exhaust
A conductor differs from an insulator in that a conductor:
has loosely attached outer electrons
A mixture in which the various components can be seen as individual substances is called:
heterogeneous mixture
When an object falls through air, its velocity increases and its acceleration:
increases
The property by which objects resist changes in state of motion is called:
inertia
A device that that transforms electricl energy to mechanical energy is a:
motor
An object that has kinetic energy must be:
moving
A falling object that has reached its terminal speed continues to gain:
neither
Which pole of a compass needle points to a south pole of a magnet?
north pole
A unit of electric resistance is called:
ohms
The new material formed in a chemical reaction is called:
product
A substance having a uniform composition, or one without impurities is called;
pure substance
The component in a solution that is present in the largest amount is called:
solvent
Your weight is:
the gravitational attraction between you and the Earth
A solution that is capable of dissolving additional solute is called:
unsaturated solution
The property which specifies the speed and direction of motion of an object is called.
velocity
As an object freely falls, its:
velocity increases
The force due to gravity is called:
weight
The force that an object exerts on on a supporting surface (or if suspended, on a supporting string), due to the force of gravity is called:
weight
