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Worksheets6th gr Science final exam
Total questions: 110
Worksheet time: 1hrs 11mins
Earth has a magnetic field with a north pole, a south pole, and a magnetic axis that doesn’t line up with Earth’s rotational axis.
true
false
The location of the magnetic poles NEVER CHANGE over time
true
false
__________ - imaginary line joining Earth’s magnetic poles
Revelution
Magnetic Axis
Revelution
Axis
An imaginary line joing earth's magnetic poles
(a)
Revelution - the spinning of Earth around its axis that causes day and night
True
False
Revelution
Earth's yearly orbit around the sun
The spinning of earth on it's axis (causes day and night)
The moons orbit around the earth
The moon is bright because of the Sun's (a) .
Moon phases - the different forms the moon takes in its appearance on Earth
true
false
________ - When the moon is between the Earth and the Sun, thus not being able to be seen.
Full moon
New moon
Waxing phases
waning phases
_______ - When all of the moon’s lighted side is visible on Earth
New moon
Full moon
Waxing phases - phases where more of the illuminated half of the moon can be seen each night after a new moon
true
false
Waxing Phases- phases when less of the illuminated half of the moon can be seen each night after a full moon.
true
false
It takes the moon 29.5 days to complete its phases instead of 27.3 days because it is keeping up with the Earth’s revolution around the Sun.
(NOT A QUESTION! ALL OF THEM ARE CORRECT)
.
.
.
.
Eclipses - __________________
When the Earth or the moon casts a shadow on each othe
When the Sun casts a shadow on different planets
Umbra - ____________
The brightest part of the shadow
The darkest part of the shadow
(a) - the lighter part of a shadow
Lunar eclipse - When the moon moves directly between the Sun and the Earth causing it to cast a shadow on the Earth
true
false
Under the ______, a total solar eclipse occurs. Under the penumbra, a partial solar eclipse occurs.
penumbra
umbra
Lunar eclipse - When the Earth moves directly between the Sun and the moon, causing it to cast a shadow on the moon
true
false
When the moon is under the ________, a total lunar eclipse occurs. When the moon is under the penumbra, a partial lunar eclipse occurs.
penumbra
umbra
A lunar eclipse can be seen by (a) in the nighttime side of the world.
The Sun-centered model was created by the Ancient Greeks, and it has the Earth in the center of the solar system and with everything, including the other stars, revolving around it.
true
false
The Sun-centered model was created by Copernicus, and has the Sun in the center of the solar system with all the planets in the solar system revolving around it in a circle.
True
False
(a) discovered that the orbits of the planets around the Sun is actually elliptical.
The main difference between the inner planets and the outer planets is that the inner planets are mostly solid, while the outer planets are mostly made out of gas
(NOT A QUESTION! ALL ARE CORRECT)
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.
.
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What are two true facts about Mercury
It is identical to earth is is sometimes called earths twin
It has no atmosphere which causes extreme temperature differences between day and night.
It is the smallest planet in the solar system
Mercury has a never-ending storm called the Geat Red Spot
What are two true facts about Venus
It is called Earth’s twin planet because of its similar size and mass.
Venus is an outer planet
Carbon dioxide in its atmosphere traps heat, making it extremely hot.
It is tilted on it's axis and causes seasons
What are two true facts about earth
It is the only planet that supports life
It is sometimes refered to as Mercury's twin because they are so alike
Its the largest planet in the solar system
Its atmospere protects people from greenhouse gases
What are two facts about Mars
Mars is tilted on its axis which causes seasons
It is called the red planet because of all the iron in its surface
It is called the red planet because of the coal in its surface
It has a never ending storm called the Great Red Spot
What are two facts about Jupiter
It has a never-ending storm called the Great Red Spot
It has 8 rings made of ice and rock
It is the largest planet in out solar system
Its tilt causes seasons
What is a fact about Saturn
It rotates on its side
It has 8 rings made up of ice and rocks
What are two facts about Uranus
Methane makes it a Bluish color
It rotates on its side because its axis is parallell
It is the 2nd planet from the sun
It has a redish color because of the iron inside of it
What are two facts about Neptune
Methene makes it a bluish color
It is an inner planet
It is the farthest planet from the Sun
It is a dwarf planet
Pluto is a (a) planet
_______ is a force created by a difference in charges (+ and -) due to gained or lost electrons.
Magnetisim
Electricity
waves
Electromagnetisim
The two types of electric charges are ______ and _______.
Positive, Negative
alike, different
Protons have a positive charge, and electrons have a negative charge
true
false
Since atoms have Diffferent Numbers of protons and electrons, atoms are electrically neutral
true
false
Objects that start electrically neutral become charged when they gain or lose electrons. Protons don’t move as easily as electrons.
(NOT A QUESTION! ALL ARE CORRECT)
.
,
.
,
____- a charged atom
electron
proton
ion
_______- the acumilation of of electric charges on an object
Static electricity
Hydroelectric
Wind energy
(a) chargesexert an electric force on eachother
Negative charges attract positive charges and repel other negative charges. Likewise positive charges attract negative charges and repel other positive charges
(NOT A QUESTION! ALL ARE CORRECT)
.
.
.
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Charged objects are surrounded by an (a) that exerts a force on other charged objects
The electric field gets _____ as you get closer to it.
weaker
stronger
Electric fields surrounding a _______ charged object move outwards, while electric fields surrounding a ______ charged object moves inwards.
Positivly, Negativly
Negativly, Positivly
Negativly, Neatrul
Neautral, Positivly
________ - materials that allow electrons to move easily through it.
Ex: metals
Insulators
Conductors
_____ - materials that don’t allow electrons to move easily through it.
Ex: plastics, rubber, glass, and wood
Insulators
Conductors
Electric current- ____ __ _______.
(a)
Electricity always flows from a place with Positive charges to a place with Negative charges.
true
false
_________ - the rapid movement of excess electrons from one place to another. Ex: lightning
Electric current
Electric discharge
What are two types of circuits?
Series circuit
Neutral circuit
Parallel circuit
______ - the measure of the electric potential energy of the electrons in the circuit.
Resistance
Voltage
Resistance - the measure of how difficult it is for electrons to flow through a material. It occurs due to collisions of flowing electrons and atoms in the material. The shorter and thicker the wire is, the less resistance there will be. Resistance produces thermal energy and light
true
false
Batteries supply energy to an electric circuit by turning chemical energy into electric potential energy. However, batteries have a limited amount of chemicals that react to produce chemical energy. When these chemicals run out, the battery is “dead”.
(NOT A QUESTION! ALL ARE CORRECT)
.
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_______ - the properties and interactions of magnets
Electricity
Magnetisim
The two poles of a magnet are the _________ pole
Hint: N____ and S____
(a)
Opposite poles repel and alike poles atract
true
false
The _________ is a region around a magnet where a magnetic force is exerted on magnetic materials or other magnets.
Hint: M______ field
(a)
Atoms don't have magnetic properties due to the spin of the atom’s electrons
true
false
_________ - group of atoms whose magnetic fields point in the same direction
Magnetic Field
Magnetic Domain
In order for an object to be magnetic, they need to have magnetic domains. In order for an object to be a magnet, all magnetic domains must point in the same direction.
(NOT A QUESTION! ALL ARE CORRECT)
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.
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Earth has a ______ ____
Magnetic domain
Electric field
Magnetic field
Electric domain
Magnetic domain - region of space affected by Earth’s magnetic field
true
false
Earth’s magnetic poles are not lined up with Earth’s geographical poles
true
false
Electromagnetic - a _________ magnet created by wrapping a current-carrying wire around a magnetic material such as iron
permenatnt
tempoary
_________ - a device that changes electric energy into mechanical energy
electric fileds
electric motors
electric generators
________ - a device that changes mechanical energy into electric energy
Electric generators
Electric motors
________ - a device that changes the amount of voltage in an alternating current with little loss of energy
Transformers
Superconductors
_________ - a material that has no resistance, meaning that electrons could travel extremely easily through it. They are formed when certain materials are cooled to very low temperatures, making them very hard to make.
Transformers
Superconductors
________ - Rhythmic disturbances that carry energy without carrying matter
Waves
Electromagnetic waves
Mechanical waves
Mechanical waves need a (a) to travel through.
Medium - the matter in which an electromagnetic wave travels through
true
false
Electromagnetic waves are waves that can travel through both mediums and empty space
true
false
_________ waves are waves where the matter moves up and down or back and forth at right angles to the wave
Electromagnetic
Transverse
Mechanical
_________ waves are waves where the matter moves forward and backward in the same direction as the wave
Transverse
Compressinal
Electromagnetic
Mechanical
________ - a region of compressed particles in a compressional wave
Refraction
Crest
Compressinal
Rarefaction - a region of close-together particles in a compressional wave
true
false
Crest - the lowest point in a wave
true
false
Trough - the lowest point in a wave
true
false
(a) - the measure of how high the crests are or how low the troughs are; the distance between the particals in a compression or rarefaction; a measure of energy.
(a) - the distance between the top of one crest to the top of the next crest or the bottom of one trough and the bottom of the next trough; the distance between compression to compression or rarefaction to rarefaction
_______ - the number of wavelengths passing a given point per second
Amplitude
Frequency
Wavelength
____ _____ - how fast a wave travels through a medium
(a)
Mechanical waves travel faster in mediums with particles closer together, and electromagnetic waves travel faster in mediums with particles farther apart.
true
false
________ - when a wave strikes an object or surface and bounces off.
Rarefraction
Reflection
Refraction - the bending of waves when it passes from one medium to another.
truee/false
(If it is true add two e s)
(a)
________ - the bending of waves around barriers
Rarefraction
Diffraction
What are the two types interference?
positive interfernce
constructive interference
neutral interference
destructive interference
negative interference
(a) - when waves combine to form a new wave when they overlap
A ______ is a compressional wave in which air molecules vibrate back and forth along the direction the sound wave is moving
mechanical waves
compressional waves
sound waves
electromagnetic waves
electrical waves
Sound waves are created by _______
Hint: V______
(a)
Sound waves can be described by their wavelength and frequency
true
false
Sound waves travel fastest through solids and colder substances
true
false
Sound waves with greater amplitude carry ____ energy and sound louder
more
less
Music is in a regular pattern and is organized, while noise is random and disorganized
true
false
(a) the human perception of how much energy a sound wave carries
how high or how low a sounds sounds
pitch
refraction
musical instrument
The higher the frequency and shorter the wavelength, the higher the
Hint: P (a)
- a sound wave reflected off a hard surface
Pitch
Echco
(a) - finding the location of objects using sound waves; used by some animals such as dolphins and bats to hunt
Doppler effect - change in frequency that is due to the motion of the sound source or listener
true
false
(a) frequency - frequency in which a particular object will vibrate
- occurs when an object starts to vibrate at its natural frequency by absorbing energy from a sound wave or object vibrating at the same natural frequency
Ressonance
Diffraction
Rarefraction
Resonance - repeated echos of sound
true
false
Electromagnetic waves are waves that can travel through both matter and empty space
.
.
.
.
The two fields that make up an electromagnetic wave are the electric field and the magnetic field
true
false
The lower the frequency and longer the wavelength, the more energy there is
true
false
(a) - energy carried in an electromagnetic wave
The electromagnetic spectrum in order from lowest frequency to highest frequency:
Microwaves, Radiowaves, Visble light, infared waves, UV radiation, X-rays, and Gamma rays.
Radio waves, microwaves, Infrared waves, Visible light, UV radiation, X-rays, and Gamma rays.
Radio waves, microwaves, Infrared waves, Visible light, Gamma rays, and X-rays.
