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WorksheetsScience EOC 7TH Grade test 1
Total questions: 14
Worksheet time: 7mins
Sally ran a distance of 8 m in 16 s. The graph below shows her motion.
Time (s)
Which best describes her motion?
Her speed was constantly changing.
Her speed remained constant.
She stopped moving after four seconds.
She decreased her speed after four seconds.
How does the energy of a roller-coaster cart change as the cart travels from the top of the roller coaster to the bottom?
The cart has greater kinetic energy at the top than it does at the bottom.
The cart has no energy at the top and more energy at the bottom.
The cart has less potential energy at the top than it does at the bottom.
The cart has potential energy at the top that is transformed to kinetic energy as it moves to the bottom.
How can simple machines make work easier?
by decreasing the force needed to complete the task
by increasing the friction between the machine and the object
by adding more work on the object than originally applied
by removing the force of gravity on the object
Why does the troposphere experience the greatest amount of atmospheric pressure compared to the other atmospheric layers?
It produces the ozone layer.
It has the highest temperatures.
It contains a high concentration of gas particles.
It is the region in which weather occurs.
Which explains why most of the rain that falls comes from the ocean?
The majority of evaporation takes place over the ocean.
The majority of precipitation takes place over the ocean.
Most rivers deposit freshwater into the ocean.
Most clouds form near or over the ocean.
Barometric pressure has been dropping all day. What weather conditions will
most likely occur?
sunny weather
stormy weather
calm weather
hot weather
A sea breeze blows from the ocean toward the shore. Why does this occur?
High pressure over the land causes a downdraft to occur.
The tide carries the wind to the shore as it moves back and forth.
Conduction of heat from the warm water produces wind from the ocean.
Air over land heats faster than air over water, which causes convection.
Which two organisms contain chloroplasts and eyespots?
amoeba and paramecium
paramecium and volvox
volvox and euglena
euglena and amoeba
How do a paramecium and an amoeba obtain food to live?
A paramecium and an amoeba both use contractile vacuoles to capture food.
A paramecium and an amoeba both make their own food through
photosynthesis.
A paramecium collects food into an oral groove, while an amoeba uses pseudopods to surround food.
A paramecium uses pseudopods to capture food, while an amoeba uses chloroplasts to make its food.
Tina observed a cell under a microscope. She concluded that it was a plant cell instead of an animal cell. Which structure helped her come to this conclusion?
She saw a vacuole, which animal cells lack.
She saw a nucleus, which animal cells lack.
She saw a chloroplast, which animal cells lack.
She saw a cell membrane, which animal cells lack.
Which is a function of the respiratory system?
to provide the body with carbon dioxide, which reacts with food to produce energy
to provide the body with oxygen, which reacts with food to produce energy
to provide the cells with glucose, which is used as a source of energy
to provide the cells with water, which is used as a source of energy
Why would the offspring resulting from fertilization have more differences than the offspring resulting from budding?
Two parents provide all of their genes to their offspring during budding, unlike during fertilization.
Each parent provides half of its genes to its offspring during budding, unlike during fertilization.
Two parents provide all of their genes to their offspring during fertilization, unlike during budding.
Each parent provides half of its genes to its offspring during fertilization, unlike during budding.
Freckles (F) are dominant to not having freckles (f). The diagram shows the cross of a homozygous dominant parent (FF) with a parent of an unknown genotype for freckles.
What is the unknown genotype and phenotype for the parent?
homozygous dominant with freckles
homozygous recessive without freckles
heterozygous with freckles
heterozygous without freckles
Two black guinea pigs were crossed and they produced a litter of 4 black and
3 white guinea pigs. Which best explains this occurrence?
White fur is dominant to black fur.
White fur was the result of a mutation.
Both parents were heterozygous for black fur.
Both parents were homozygous for black fur.
