Worksheets8th Grade End of the Year Review
Total questions: 50
Worksheet time: 26mins
What Is natural selection?
living things adapt to their environment to survive and produce more offspring
Living things eat and hunt lesser creatures so they are not the one eaten
The way natural works on its own
Changes in physical structure, function, or behavior that allow an organism to survive
Adaptation
Mutation
Camouflage
Interdependence
Coloring of markings that help or organism blend in with its surroundings
Adaptation
Trait
Camouflage
Mutation
What animal did Darwin study?
A Finch
A Lizard
A Ladybug
A Bear
What is Newtons 3rd law?
Everything has an equal an opposite reaction
An object in motion stays in motion
an object in rest stays in rest
F=ma
What are stars mostly made of?
Oxygen
Carbon
Hydrogen
Cookies
What makes an electromagnet?
A battery
A solenoid and nail
A battery, a nail, and a solenoid
A nail and a cookie
What do space probes do?
A spacecraft that travels through a planet to collect science information.
A ripoff of a satellite
A spacecraft that travels through earth to collect science information.
A spacecraft that travels through space to collect science information.
What is The Doppler Effect?
a law stating that the red shifts in the spectra of distant galaxies are proportional to their distance
an increase in the frequency of sound, light, or other waves as the source and observer move toward each other.
What is mass extinction?
The extinction of a large number of species within a large period of geological time
The extinction of one type of species within a relatively short period of geological time
The extinction of a one type of species within a large period of geological time
The extinction of a large number of species within a relatively short period of geological time
The picture shows a Dalmation dog. Which traits are inherited traits?
Fur pattern
Eye color
Catching a ball
Floppy ears
Favorite treat
A model of Earth, the Mon, and Sun is shown.
Which movement of the model displays an event that takes about 28 days?
Earth rotates once on its axis.
The Moon revolves once around the Sun.
The Sun rotates once on its axis.
The Moon revolves once around Earth.
Suppose a new type of plant is discovered with the following characteristics:
-Rapid reproduction
-Offspring genetically identical to parent
-New plant grows from root of existing plant
How does this type of plany most likely reproduce?
asexual reproduction
sexual reproduction
The diagram shows the operational set up of a dry steam power plant and how energy is provided to residents.
Which energy transformation best applies to the dry stream power plant and the energy provided to residents?
heat --> electrical --> mechanical
heat --> mechanical --> electrial
light --> electrical --> mechanical
mechanical --> heat --> light
Which answer below shows the parts of the waves in the correct order?
amplitude, frequency, wavelength
wavelength, amplitude, frequency
frequency, wavelength, amplitude
amplitude, wavelength, frequency
wavelength, frequency, amplitude
Which statement describes how one part of the solar system most likely formed?
The Sun formed from a large collection of particles at the center of the solar nebula.
Earth formed from the nucleus of a large comet merging with a meteor.
Jupiter formed from the collision of two asteroids.
The Moon formed from a cloud of gases.
A tall pea plant (Tt) crosses with another tall pea plant (Tt) to produce 100 seeds. What is the most likely number of offspring for all three genotypes?
100% Tt
50% TT, 50% tt
50% Tt, 25% TT, 25% tt
33% TT, 33% Tt, 33% tt
A student runs 100 meters in 16 seconds. What is the student's speed?
0.16 m/s
6.25 m/s
84.0 m/s
1600 m/s
Identify a disposable camera as either
Digital
Analog
Which of the following correctly defines the function of a signal?
A wave that transfers energy from place to place.
A way to communicate or convey information.
An explosion that indicates a chemical reaction.
The ability to do work or cause change.
Which property of visible like waves determines the color we see?
wavelength
amplitude
rest position
the medium it moves through
What property of the waves would change if you increased the speed of the wave moving up and down.
the amplitude
the rarefactions
the frequency
the compression
What organisms depend on photosynthesis for survival?
Plants & Algae
Mammals
Amphibians and Reptiles
Every living organism, in some manner, depends on photosynthesis.
LOCOE
LOCOM
A force is defined as a (Check all that apply)
Push
Pull
Spin
Rotation
A reference point is defined as
the ending point you choose to describe the position of an object
the starting point you choose to describe the position of an object
the spot you point to where position is referenced
Velocity is the speed and _________ of a moving object.
vector
magnitude
direction
motion
Select the correct unit of measurement for Force.
Joules
Isaacs
Newtons
meters per second
Friction will cause an increase in
negative acceleration
positive acceleration
speed
gravity
A magnet will pick up an object that is made of...
plastic
iron or steel
glass
copper
How many Chromosomes do we inherit from our parents?
23 from dad and 23 from mom, or 46 total
13 from dad and 13 from mom, or 26 total
13 from dad and 33 from mom, or 46 total
What is a Chromosome?
a threadlike structure found in the nucleus of most living cells, carrying genetic information in the form of genes.
An X shaped thing found in the mitochondria of the cell that helps create energy in the form of ATP.
A threadlike structure found in the lysosome carrying genetic information in the form of proteins.
A colorful and fluorescent type of sugar that our body uses to break down and get energy.4
Many of our traits can come from both our ______ and ______
Brain and Liver
Nucleus and Mitochondria
Mom and Dad
DNA and Environment
