Font size
WorksheetsScience 2nd Semester Exam Prep
Total questions: 100
Worksheet time: 2hrs 40mins
Earth's atmosphere is composed mostly of_____.
nitrogen
carbon dioxide
oxygen
The ozone layer _____ solar ultraviolet radiation
intensifies
creates
filters out
Humidity refers to the amount of _______ in the air.
pollutants
dust
moisture
A hurricane develops __________.
in the mountains
at the poles
over water
Climate refers to _____ weather.
long term
moment to moment
short term
The heat in the greenhouse effect comes from ________
desert habitats
the center of the earth
solar radiation
An animal is a ________.
hard rock
living thing
large building
Photosynthesis takes place in the_______ of a plant.
leaves
flowers
roots
An amino acid combines with others to form _____.
long chains
short chains
molecules
Glucose is made by _____.
animals
plants
both plants and animals
DNA is the major component of _____.
chromosomes
bacteria
acids
Fertilization is a process that takes place _____.
in both plants and animals
in just plants
in just animals
A healthy leaf is usually _____.
round and brown
white and fluffy
flat and green
An animal ovary produces _____.
blood
tiny babies
eggs
What is an appendage most like?
a limb
a bone
a muscle
The opposite of vertebrate is _____.
vertebrae
invertebrate
backbone
Behavior has to do with how a creature _____.
thinks
acts
dreams
Dormant is the same as _____.
active
inactive
extinct
A voluntary muscle _____.
can be consciously controlled
is smooth muscle
cannot be controlled voluntarily
Cardiac muscle _____.
is located in the heart
connects muscles and bones
is found in many internal organs
The brain is used for controlling _____.
the weather
the body
the car
What is one example of a hormone?
milk
insulin
pancreas
The urethra is shaped like a _____.
ball
tube
disc
Intestines are part of the _____ system.
skeletal
digestive
muscular
An artery carries blood ______ the heart.
away from
toward
to
Blood flows from your body if you cut your ______.
hair
nails
skin
An antibody is most like _______
an artist
a soldier
a manager
Cancer is a serious __________.
germ
illness
infection
Teenagers experience emotional and physical _______ during adolescence.
responsibilities
changes
burdens
The _____ took care of the baby after its birth.
barn
mother
egg
Where is a chromosome located?
inside a gene
inside a cell's nucleus
inside DNA
A dominant gene is _______.
neutral
strong
weak
A photo of your ancestor is passed down by your ________ .
family
teachers
friends
Where can you find a fossil?
in a tree
in a safe
in a rock
Carbon dating is used to determine something's _________.
age
DNA
ancestors
The purpose of a cast is to keep something _____ .
indoors
safe
moving
A dinosaur is an animal that is _______.
living today
extinct
make-believe
Prehistoric refers to a time _________ .
after the computer
before written records
in the recent past
Abiotic factors that affect an organism would not include ________.
predation
soil quality
temperature
In ecology, the opposite of a biotic factor is _______factor.
a geological
an abiotic
an antibiotic
What causes competition amongst wild animals?
limited resources
altitude changes
plentiful food
Where are humans in a food chain?
at the top
in the middle
at the bottom
The opposite of interdependence is _____.
despondence
independence
dependence
In parasitism, one organism benefits, and the other one _______.
also benefits
is not affected
is harmed
A deciduous forest is the same as a _______ forest.
tropical
temperate
boreal
A desert is often covered with _________.
tall trees
water
sand
3. Fungi grow on _________ .
lifeless objects
organic materials
water
Lichen are a type of _______.
fungus
forest
fish
The Amazon rainforest is an important supplier of Earth's ______.
ice
sand
oxygen
A savanna is covered with _______.
trees
grass
water
The main cause of acid rain is _________ .
earthquakes
volcanic eruptions
pollution
Which of the following is a threat to biodiversity?
habitat destruction
conservation
clean wilderness
Gardeners use compost as a _________.
pesticide
fertilizer
mulch
A natural resource is ______ to humans or other life forms.
useless
a nuisance
valuable
What is the opposite of condensation?
evaporation
melting
freezing
The exosphere is the _____ part of Earth's atmosphere.
outermost
innermost
middle
Precipitation is formed when _____ condenses
snow
moisture
rain
You won't find _____ in the stratosphere.
airplanes
mountains and valleys
the ozone layer
The thermosphere is around _____ kilometers above Earth's surface
90
60
30
The mesosphere is the _____ layer of the Earth's atmosphere.
bottom
top
middle
A dark cloud means it might ________
be sunny
smell bad
rain
A hurricane develops __________.
in the mountains
at the poles
over water
Flying against a jet stream will cause an airplane flight to _____.
nosedive
take longer
speed up
What does a meteorologist study?
weather
earthquakes
sound and motion
A thunderstorm is the same as _______.
an electric storm
a blizzard
a tornado
If you see a tornado, it's very dangerous to _________.
get below ground
go outside
stay away from windows
An El Nino drastically reduces the abundance of ________
phytoplankton
storm clouds
warm water
At a high elevation, there is little chance of _________ .
getting dizzy
lack of oxygen
flooding
During a La Nina, marine life is _______
more abundant than usual
suffering
scarce
In what direction are latitude lines?
Latitude lines are diagonal
Latitude lines are horizontal
Latitude lines are verticle
The word classification comes from the word _______
classy
classified
classic
The genus Panthera does not include _________.
house cats
tigers
lions
A species is a group of _______.
experiments
related minerals
living things
A ______ is caused by a virus.
bacterial infection
viral infection
genetic disease
A chloroplast is a structure located in the _____ of plants.
cells
stem
roots
Cytoplasm is not _____.
watery
jelly like
solid
A ribosome is a cluster of _____.
cells and organelles
proteins and RNA
cytoplasms
Chlorophyll is a _____ pigment found in plants.
green
brown
white
An egg may be protected by a shell to allow the fertilized embryo to grow _____.
inside the father's body
inside the mothers body
outside the mother's body
What does a gene determine?
a person's physical characteristics
a person's learned interests
a person's daily habits
You would NOT expect a _____ to cause mutation in an organism.
chemical
virus
hurricane
Pollen can be carried to other plants by _____.
snow
rain
wind
What does a root do?
makes flowers
takes in water
hurts a plant
A seed is _____ plant part.
a small
an old
a broken
A _____ is an example of an arachnid.
wasp
scorpion
ladybug
A stigma is part of a flower's _____.
female reproductive organs
root system
male reproductive organs
Another name for a night crawler is _____.
inchworm
wriggler
earthworm
Your skeleton is made up of _____.
hair and fingernails
muscles and tendons
bones and cartilage
A fish has a head, tail, _____ ,and fins.
feet
gills
hands
If an enzyme malfunctions, _____ may result.
freezing
sleep
disease
How does proper nutrition make you feel?
ill/sick
healthy
tired
A blood vessel does not carry _________ to all parts of your body
food
oxygen
feelings
Another name for the larynx is the ___________ .
nasal bone
windpipe
voice box
You use your trachea to ________
breathe
eat
sleep
What is something people use to create immunity?
immunizations
stimulants
prosthetics
The _______ is an organ in the lymphatic system.
spleen
heart
brain
A pathogen can be a ________.
virus
cure
disease
A person who is _______ years old is in the middle of childhood.
21
7
1
Algae and ameba are in a kingdom called _______.
monerans
protists
fungi
_________ is located in the center of the tropics.
the north pole
Australia
the equator
