Worksheets8th Grade Science Final
Total questions: 27
Worksheet time: 14mins
What is heredity?
the passing of traits from parents to offspring
the passing of traits from offspring to parents
the random assignment of traits to offspring
the distribution of x and y chromosomes to offspring
Which of the following is NOT true about DNA?
traits are coded
acquired throughout your life
traits can be passed through many generations
How many possible trait combinations can result from the same 2 parents?
1,000
5,000,000
23,000
8,000,000
What's the term?
letter codes for a trait (BB, Bb)
genotype
phenotype
Heterozygous
(Hybrid)
Homozygous
(Purebred)
What's the term?
Purebred (BB) or (bb)
genotype
phenotype
heterozygous
homozygous
What's the term?
Hybrid - mix (Bb)
genotype
phenotype
heterozygous
homozygous
What's the term?
actual physical characteristics (red hair, brown eyes)
genotype
phenotype
heterozygous
homozygous
What's the term?
the change in hereditary features of a population of organisms over time
survival of the fittest
evolution
extinct
mitosis
What's the term?
individuals best adapted to their environment are most likely to survive and reproduce
sex cells
chromosomes
evolution
survival of the fittest
In Convection Currents, what causes the plates to move?
air pressure
gravity
heat
water
What makes seismic waves that travel through all surfaces and in all directions (boundaries)
rocks
earthquakes
volcanoes
tornados
Which of the following builds MOUNTAINS?
compressional force
Faults
folds
True or False:
When determining the RELATIVE AGE of rocks, the oldest rocks should be on the bottom)
TRUE
FALSE
What's the term?
General age based on comparing rock layers to the location of other layers and using fossils and fault lines
absolute age
relative age
What's the term?
Specific age of a rock
relative age
absolute age
Earth is estimated to be ______ years old.
2022
4.5 billion
3 million
2.9 trillion
What's the longest section of time in the geologic time scale?
Mesozoic
Cenozoic
Precambrian
Paleozoic
What type of Asexual Reproduction is defined below?
a new organism can grow from a separated piece (starfish)
parthenogenesis
fission
budding
regeneration
What type of Asexual Reproduction is defined below?
reproduction by forming buds off the parent and then detaching (yeast)
budding
fission
regeneration
plant propagation
What type of Asexual Reproduction is defined below?
reproduction through eggs that hatch without fertilization
fission
parthenogenesis
regeneration
budding
What type of Asexual Reproduction is defined below?
strawberry, potato, plants that grow by spreading roots/vines
regeneration
fission
budding
plant propagation
Which type of force is defined below?
force of attraction, pulls things together (non-contact)
gravity
friction
weight (force)
magnetic force & electric force
Which type of force is defined below?
when two surfaces touch, produces heat, and tries to reduce movement (objects come into contact)
gravity
friction
weight (force)
magnetic force & electric force
Which type of force is defined below?
mass + pull of gravity
gravity
friction
weight (force)
magnetic force & electric force
Which of the following forces is defined below?
as the distance increases, the force strength decreases
opposites attract & similar charges repel (non-contact forces)
gravity
friction
weight (force)
magnetic force & electric force
In Newtons 1st Law of Motion,
a __________ force = Net force is 0 Newtons
balanced
Unbalanced
Which of the following is NOT a way in which forces are considered balanced (0 Net Force)?
if the object is not moving
if the object's motion is constant
if the forces cancel out
if the object's speeding up
