Physical Science final exam 2019
An assumption that a person makes about the world that helps him to investigate the world and understand it from a certain point of view.
Presupposition
the distance between the resting point and a crest or trough
amplitude
what produces the heat that warms the air temperature on Earth
the sun
A radiator that is giving off heat will have greater _______ than a burning candle
thermal energy
the energy of moving particles in matter is called
thermal energy
we can measure temperature using a _______
thermometer
in which lab would a student MOST LIKELY use a thermometer
to find out how fast cocoa cools in a plastic cup
a low point of a wave
trough
s = d/t
unit for speed
defined as a kilogram meter per second squared
unit of force
the rate of displacement of a system.
velocity
to move rapidly back and forth
vibrate
if two guitar strings produce the same pitch when plucked, they must be:
vibrating at the same rate
how loud or soft a sound is
volume
the amplitude of a sound wave determines
volume/dynamics (loud/soft)
sound waves move faster when the medium is:
warm
Heat always flows from something ______ to something ______
warmer; cooler
the distance between one crest or trough to the next on a wave
wavelength
The perspective from which a person sees or interprets all matters of life
worldview
In science we...
explore, explain, and describe to glorify God
A substance that can flow
fluids
32 degrees Fahrenheit is the ______ point of water
freezing
A contact force that opposes the movement of objects
friction
the force that occurs when one object rubs against another
friction
when you rub your hands together, heat is produced by
friction
sound waves travel fastest through a:
gas
name two conductors:
gold and copper
how many ways can heat be produced
3
how many different types of bases make up DNA?
4
The rate of change of the velocity or speed of a system during a time interval
Acceleration
Why catastrophes and disasters occur
Because man sinned
what are units in which temperature is measured
Fahrenheit and Celsius
states of matter
Gas, solid, liquid, plasma
the action or process of observing something or someone carefully or in order to gain information.
Observation
Steps of Scientific Method
Pose a question, form a hypothesis, design an experiment, gather data, draw conclusions, communicate
uses the fulcrum in between the applied force and load
The first class lever
uses the load between the fulcrum and applied force and
The second class lever
uses the applied force between the fulcrum and the load
The third class lever
to give a prejudiced outlook to
bias
a group of campers are sitting around a campfire. How is heat energy being produce?
burning
0°C + 273.15 = 273.15K
celcius to kelvin
complete electrical connection around which current flows or circulates
closed circuit
sound waves move slower when the medium is:
cold
one of three methods of heat transfer from a hotter to a cooler object; involves direct contact
conduction
metals are good ______ of heat
conductors
_______ is the flow of energy that occurs in a gas or liquid
convection
one of three methods of heat transfer from hotter to cooler locations
convection
a high point of a wave
crest
Theories explain, laws describe
difference?
what kind of energy is produced by a toaster
electrical energy
All matter on earth contains ______
energy
when an object is heated, it will _______
expand
values on the y-axis, and time values on the x-axis. ... Acceleration is defined as a change in an object's velocity, so if an object is accelerating at 2 m/s/s, then every 1 second, the object will gain 2 m/s.
graph of acceleration
A quantity of thermal energy that flows from one system to another, resulting in a change of temperature or state
heat
any material that does not allow heat to pass through it easily
insulator
_______ are used to help conserve heat in houses
insulators
what happens to boiling water after you add ice cubes to it
its temperature falls
energy which a body possesses by virtue of being in motion.
kinetic energy
which of the following actions on a guitar will lower the pitch?
loosening a string (make it longer)
One of the fundamental concepts of creation. Anything that Occupies space and has mass
matter
Sound can only travel through matter, which is called a:
medium
A distinct particle formed when two or more atoms covalently bond together
molecules
A change of position during a time interval
motion
a change in position with respect to a reference point is called
motion
an electrical circuit that is not complete
open circuit
name two insulators
paper and styrofoam
an electrical circuit or portion of a circuit with multiple current paths so that the supplied current must split up to flow through each load in the circuit
parallel circuits
How high or low a sound is
pitch
The frequency of a sound wave determines
pitch (high/low)
the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
potential energy
one of three methods of heat transfer from hotter to cooler locations involving radiant energy
radiation
the undisturbed position of particles when they are not vibrating
resting point
an electrical circuit or portion of a circuit with a single current flow path through a connected set of electrical loads
series circuit
sound waves travel fastest through a:
solid
The ______ is the ultimate source of heat energy for the earth
sun
A measure of the average kinetic energy of the particles in a substance; the hotness or coldness of an object, measured in degrees.
temperature
affects how fast sound waves move
temperature
which pipe in a pipe organ makes the lowest sound?
the longest and thickest pipe
