NEW
Font size
S
M
L
XL
Worksheets7th Grade Semester Exam
Total questions: 57
Worksheet time: 29mins
Name
Class
Date
1.
The diagram below shows a wave. The features of the wave are labeled A, B, C, and D. (P.10.1) \Which label identifies the wavelength?
a)
A
b)
B
c)
C
d)
D
2.
The energy generated by the sun travels to Earth as electromagnetic waves of varying lengths. Which statement describes an electromagnetic wave with a long wavelength?
a)
It has a high frequency and low energy
b)
It has a high frequency and high energy
c)
It has a low frequency and can travel through a vacuum.
d)
It has a low frequency and needs a medium to
travel through
3.
Habib looks around his classroom at different objects. Which object reflects almost all of the light that strikes it
a)
white poster board
b)
clear window glass
c)
red book cover
d)
black construction paper
4.
Kana shines a light onto paper. The light contains both blue and red wavelengths of light, as shown in the figure below. If the paper were blue, what color (or colors) of light would bounce off the paper?
a)
only red
b)
only blue
c)
both red and blue
d)
neither red nor blue
5.
Electromagnetic energy travels through space in waves. The electromagnetic spectrum includes all electromagnetic waves, arranged according to frequency and wavelength. Which of these is an example of an electromagnetic wave?
a)
radio wave
b)
sound wave
c)
ocean wave
d)
gravitational pull
6.
Caleb counts the number of ocean ways that pass at the end of the pier in one minute. What property of waves is Caleb measuring?
a)
period
b)
frequency
c)
amplitude
d)
wavelength
7.
Ava covers a flashlight with a piece of black paper. Why doesn’t she see the light when she turns on the flashlight
a)
the paper absorbs most of the light
b)
the paper transmits most of the light
c)
the paper refracts most of the light
d)
the paper reflects most of the light
8.
During a thunderstorm, Sanjay saw lightning and then heard thunder 5 s later. What would be different if the air had been warmer?
a)
He would have seen the lightning and heard the thunder at the same time
b)
He would have heard the thunder before seeing the lightning
c)
He would have heard the thunder sooner
d)
He would have heard the thunder sooner
9.
During science class, Sophie measures the temperature of water every minute as it is heating. After a few minutes, the temperature is 82 °C. How far below the boiling point of water is this?
a)
8 °C
b)
18 °C
c)
130°C
d)
191 °C
10.
Sarah heated two cubes of aluminum to 50 °C. Cube A has a volume of four cubic centimeters.
Cube B has a volume of two cubic centimeters. If the cubes do not touch each other, which of
these statements is true
Cube B has a volume of two cubic centimeters. If the cubes do not touch each other, which of
these statements is true
a)
Cube
A has a higher temperature than cube B
b)
Cube B has a higher temperature than cube A
c)
Cube A has more thermal energy than cube B
d)
Cube B has more thermal energy than cube A
11.
These two beakers contain the same liquid substance at the same temperature. How does the thermal energy of the liquid in the larger beaker compare to the thermal energy of the liquid in the smaller beaker?
a)
The liquid in the larger beaker has less thermal
energy than the liquid in the smaller beaker
b)
The liquid in the larger beaker has more thermal
energy than the liquid in the smaller beaker
c)
The liquid in the larger beaker has the same
amount of thermal energy as the liquid in the
smaller beaker
smaller beaker
d)
The exact volume of liquid in each beaker must
be known to compare the thermal energy
of the liquids
of the liquids
12.
Ms. Lewis is a chemist mixing two solutions together. A chemical reaction takes place, and the solution becomes warm. Which statement best describes what has happened?
a)
Energy has been created in the form of thermal
energy
b)
Energy has been transformed from one form to
another
c)
More energy has been created than has been
destroyed
d)
The chemical energy of the solution has been
destroyed
13.
A group of sheep are grazing in a field. As they eat, the sheep break down the molecules in the grass, which releases energy. Which form of energy is stored in the grass
a)
chemical energy
b)
elastic energy
c)
nuclear energy
d)
thermal energy
14.
Gordon throws a baseball into the air. It rises, stops momentarily when it reaches its greatest height,
and then falls back to the ground. At what point does kinetic energy convert to potential energy
and then falls back to the ground. At what point does kinetic energy convert to potential energy
a)
when the baseball is rising
b)
when the baseball is falling
c)
just after the baseball hits the ground
d)
while the basesball is at its highest point
15.
Laith notices that the air in his science classroom is much warmer than the air in his math classroom. Which statement describes how the air particles are different in his colder math classroom?
a)
They move faster on average
b)
They are vibrating
c)
They have less average energy
d)
They move more freely
16.
Ella holds an ice cream cone in her hand. She soon notices that her hand begins to feel cold. What is different about the particles that make up her hand?
a)
They are getting larger.
b)
They are moving slower on average
c)
They are gaining average energy
d)
They are joining together
17.
Liang is warming a pot of soup on the stove. How is the motion of the particles in the soup different after the temperature of the soup increases?
a)
They move faster on average
b)
. They
move less freely
c)
They have less average energy
d)
They vibrate and are close together
18.
Conduction is the transfer of energy from a warmer object to a cooler object through _______________
a)
A gas
b)
liquid
c)
empty space
d)
direct contact
19.
While exploring a rock formation, Hiroto finds a rock that has footprints pressed into it. A geologist tells Hiroto that the rock is millions of years old. Which of these statements is correct about his find
a)
It is not a fossil, because footprints are not
fossils
b)
It is not a fossil, because only whole organisms
are fossils
c)
It is a fossil only if Hiroto finds actual parts
of the organism in rocks nearby
d)
It is a fossil because footprints of organisms
from millions of years ago are considered to be fossils
20.
At the zoo, Anya observes that individuals of a certain kangaroo species have slightly different sizes and colors. What characteristic of populations is Anya observing
a)
adaption
b)
evolution
c)
selection
d)
variation
21.
When farmers want two desirable traits in cows, they often breed individuals that have those traits in the hopes that the offspring will have both desirable traits. What is this practice called
a)
variation
b)
natural selection
c)
adaption
d)
artificial selection
22.
Polar bears live in the Arctic. Ice in the Arctic is melting rapidly, reducing the range in which the polar bear can live. If polar bears do not have adaptations that allow them to survive these changes, what may happen to the polar bear?
a)
They may overpopulate
b)
They may become extinct
c)
They may change the environment
d)
tey mare become another species
23.
The diagram below shows a model of the proposed relationships among some groups of mammals.
Which of these organisms is most closely related to whales?
Which of these organisms is most closely related to whales?
a)
bison
b)
camel
c)
hippos
d)
pigs
24.
The fossil record contains fossils from many geologic ages. Fossils enable scientists to piece together what ancient organisms looked like. Which of these answers best describes how fossils in the fossil record are classified?
a)
by ages and
physical similarities
b)
by whether the fossil contains hard or soft
tissues
c)
by size and the type of rock in which they are
found
d)
by similarities in their DNA and in the minerals
they contain
25.
Juan is studying fossils. His teacher wrote the following statements on the board and asked the students to put them in the correct order to describe how fossils are formed
1. Minerals seep into the organism’s body and replace it with stone.
2. The organism completely decomposes, leaving behind an imprint.
3. An organism dies and its body is covered with a layer of sediment.
4. Time passes, and sediment layers continue to build up on the organism
1. Minerals seep into the organism’s body and replace it with stone.
2. The organism completely decomposes, leaving behind an imprint.
3. An organism dies and its body is covered with a layer of sediment.
4. Time passes, and sediment layers continue to build up on the organism
a)
3,
4, 1, 2
b)
1,3, 2, 4
c)
2, 3, 4, 1
d)
3, 2, 1, 4
26.
A species of rodent lives in a moist forest climate. Over time, the climate becomes drier and more desert-like. Which of these adaptations would most likely will improve the chances that the rodent species could survive as its environment changes?
a)
being able to eat plants that survive in the changed environment
b)
being able to eat only one type of berry
c)
living above ground in damp areas
d)
having dark hair and small ears
27.
Which of the following is least likely to cause a species to become extinct due to changes in the environment
a)
less genetic variation
b)
more genetic varation
c)
specific food preferences
d)
more competiton for food
28.
Why do single-celled organisms divide
a)
to repair damaged cells
b)
to transmit genetic material by reproductio
c)
to reduce the number of chromosomes in the cell
d)
to increase the number of chromosomes in the cell
29.
Sean is studying fungi in his lab. Each fungus produces specialized cells that develop into new, multicellular organisms that are genetically identical to the parent organism. What does this process demonstrate?
a)
sexual reproduction
b)
a sexual reproduction
c)
fertilization
d)
vegetative reproduction
30.
Having attached or unattached earlobes is an inherited trait. Attached earlobes occur in individuals with the genotype ee.
What is the relationship between an individual's chromosomes and the genes for earlobe attachment
What is the relationship between an individual's chromosomes and the genes for earlobe attachment
a)
The genes for earlobe attachment are located on the
chromosomes of each cell
b)
The chromosomes for earlobe attachment are located on
the genes of each cell.
c)
The genes for earlobe attachment come from one parent
and the chromosomes for earlobe attachment come from the other
d)
The chromosomes for earlobe attachment are made
up of cells
31.
Look at the diagram shown below. The alleles for the parents are missing.
The parents in the diagream avove have which of these alleles?
The parents in the diagream avove have which of these alleles?
a)
DD and Dd
b)
Dd and dd
c)
Dd and Dd
d)
DD and dd
32.
Look a the diagram of sexual reproduction below
Which of these correctly describes the genetic infromation in the diagram/
Which of these correctly describes the genetic infromation in the diagram/
a)
Cell A is genetically identical to cell C.
b)
Cell B contains the same genetic material as
cell C
c)
Cell C has genes from cell A and genes from cell
B
d)
Cell C has genes from cell A and genes from cell
B
33.
Many plants reproduce sexually through the joining of sex cells in a flower. The female sex cell is an egg. The male sex cell is part of the pollen. By what process is the sex cell in pollen produced?
a)
fertilzation
b)
mitosis
c)
meiosis
d)
pollination
34.
There are two main types of cells in the human body. Some cells are body cells. Other cells are sex cells. The sex cells are involved in transmitting genetic information from parents to offspring. Which of these statements describes a characteristic of a sex cell?
a)
It makes up most tissues
b)
It contains only sex chromosomes
c)
It has twice the chromosomes of a body cell
d)
It contains half the chromosomes of a body cell
35.
Xander examines several microscope slides showing stages of the cell cycle in onion cells. On one slide, he notes that the cell does not appear to have chromosomes. Instead, the genetic material appears to be a tangled ball of string. What stage of the cell cycle is he observing?
a)
cytokinesis
b)
metaphase
c)
interphase
d)
prophase
36.
Erin is researching diabetes. She learns that family history of diabetes, diet, and amount of exercise are some of the factors associated with the occurrence of diabetes. Based on this information, which of these statements best describes diabetes
a)
The occurrence of diabetes depends on genetic
and acquired factors
b)
A parent with diabetes has a 50% chance of
passing the disease to offspring
c)
Diabetes is controlled by a single gene.
d)
Diabetes is an example of a codominant trait.
37.
Scientists must carefully weigh the risks and benefits of biotechnology. Which of these is a risk that scientists must consider when genetically engineering a plant?
a)
what kinds of
nutrients the plant will need
b)
how to crossbreed the plant with other plants
c)
whether the plant will grow well in different
soils
d)
whether the plant will cause allergic reaction
in humans
38.
Sickle-cell anemia is a disease that is caused by a mutation in DNA. Which of the following is a true statement about sickle-cell anemia?
a)
It is never inherited from a parent.
b)
The mutation occurs during a person’s lifetime
c)
It is an infectious disease
d)
It is a genetic
disorder.
39.
An example of biotechnology is the process of cloning. Which of things listed below could not be cloned?
a)
A dog
b)
a rock
c)
a bactrieum
d)
a fragment of DNA
40.
Luis wants to interview someone who has a career in biotechnology. Which of the following best describes a career in biotechnology?
a)
Athena uses a sophisticated telescope to observe
stars
b)
Zach tracks the number of fish that inhabit a
certain coastal area
c)
Vincent modifies the DNA of bacteria to study
the function of their genes
d)
Lindsey writes computer programs that model the
three-dimensional structure of chemical compounds
41.
Herbivores, carnivores, and omnivores are all _________________________
a)
Decomposes
b)
producers
c)
producers
d)
consumers
42.
Rocks, temperature and water are what part of the environment?
a)
biotic
b)
abiotic
c)
population
d)
living
43.
Green plants, algae and phytoplankton are _________________________
a)
decomposes
b)
herbivores
c)
producers
d)
consumers
44.
A scientist studying the way that egrets, herons and crabs interact, who is NOT interested in the abiotic factors such as rocks, water and temperature, is studying what level of environmental organization?
a)
population
b)
ecosystem
c)
community
d)
biosphere
45.
Cogon grass, a non-native species of grass, grows in many areas of Florida. Its roots can spread quickly underground. Cogon grass thrives where fires allow it to spread. Which of the following is a negative effect that cogon grass could have on other organisms in its habitat
a)
It provides places for animals in the habitat to
hide
b)
provides a new source of food for animals in the
habitat
c)
It replaces native plants that animals depend on
for food or shelte
d)
It contributes nutrients to the soil in the
habitat so that soil organisms can grow
46.
Honeybees are important pollinators of flowers. Mites that live in the bodies of bees can attack honeybee colonies. Some birds, amphibians, and insects eat Which of the following relationships is not included in the description above/
a)
parasitism
b)
mutualism
c)
commensalism
d)
predator-prey
47.
Remoras are small fish that attach to sharks but do not harm them. When sharks tear prey apart, remoras eat the leftovers. What statement about the relationship between remoras and sharks is true?
a)
Remoras and sharks have a predator-prey
relationship
b)
The relationship between remoras and sharks is
an example of mutualism
c)
The relationship between remoras and sharks is
an example of parasitism.
d)
The relationship between remoras and sharks is
an example of commensalism
48.
Ecological environments can be divided into different levels of organization. From the following choices, identify the correct order from largest to smallest
a)
ecosystem, population, community, individual
b)
community, ecosystem, population, individual
c)
ecosystem, community, population, individual
d)
individual, population, community, ecosystem
49.
In a food web, the arrows point in just one direction because they show _____________________.
a)
which animal is larger
b)
which animals are related
c)
how energy is transferred to the animal that is
eating
d)
how energy is transferred to the animal that is
eaten
50.
Ecosystems have producers, decomposers, and consumers. Carnivores and scavengers are both types of consumers in an ecosystem. Which of the following is a characteristic of scavengers that makes them different from carnivores
a)
Scavengers eat only plant materials
b)
Scavengers are omnivores that always eat live
animals
c)
Scavengers are omnivores that eat dead plants
and animals
d)
Scavengers are able to produce their own food
when no other food is available
51.
The Florida panther is an endangered species. It eats mostly white-tailed deer, wild pigs, raccoons, and armadillos, but it may also eat other small mammals and birds. The Florida panther used to live in forests, prairies, and swamps over most of the southeastern United States. Now it lives only in the southern tip of Florida, south of the Caloosahatchee River. What is the most likely cause of the decline of the Florida panther population?
a)
the unintentional introduction of a larger
predator
b)
the break-up of the panther’s natural habitat by
human settlement
c)
the weakening of species due to inbreeding
d)
competition for territory between panthers
52.
Earth’s environments include both biotic and abiotic factors that living things need to survive. Large mangrove ecosystems are found along the coastlines in Florida. The figure shows a mangrove ecosystem that has both biotic and abiotic factors.
Which of the following are both abiotic factors in the mangrove ecosystem?
Which of the following are both abiotic factors in the mangrove ecosystem?
a)
water and pelican
b)
sun and rocks
c)
pelican and crab
d)
snail and water
53.
The arrows on the food web show that
a)
deer eat grass and shrubs.
b)
robins eat grass
c)
deer eat prairie dogs
d)
squirrels eat coyotes
54.
Three organisms on the food web have arrows pointing toward them but no arrows pointing away from them. This is because
a)
. they make their own food
b)
they are tertiary (third-level) consumers
c)
they give energy to others.
d)
they need no energy
55.
Three organisms on the food web have arrows pointing away from them and no arrows pointing toward them. These organisms are
a)
ominvores
b)
decomposers
c)
producers
d)
scavengers
56.
Damon is a musician playing in a band. At the end of a song, he plucks a single guitar string. The string moves rapidly back and forth as shown in the figure below.
Which of these statements explains what happens to the kinetic energy of the moving string?
Which of these statements explains what happens to the kinetic energy of the moving string?
a)
The kinetic energy is changed into potential
energy and stored
b)
The kinetic energy is converted to sound energy
and thermal energy
c)
The kinetic energy is destroyed until no energy
remains.
d)
Some of the energy is converted to sound energy,
but the rest is destroyed.
57.
Kito puts his spoon into a helping of fresh, hot, mashed potatoes as shown in the figure below.
Which process takes place when the two objects come together?
Which process takes place when the two objects come together?
a)
The temperature of the spoon increases, but its
thermal energy does not change
b)
Energy in the form of heat is transferred from
the warmer mashed potatoes to the cooler spoon
c)
The thermal energy of both the mashed potatoes
and the spoon increases as energy in the form
of heat is transferred between them
of heat is transferred between them
d)
The average temperature of the spoon does not
change
Reset
