Question of the Day
Term 2
Science
Term 2 Question of the Day
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Ashley thought that fewer seeds would grow in salt water than in fresh water.
To test her hypothesis, she performed the following steps:
1) Plant ten seeds in a small container of soil.
2) Pour salt water into the container.
3) Place the container in sunlight.
4) Watch the container for five days.
After five days, Ashley found that only two seeds grew. She decided that her
hypothesis was correct.
Which statement describes why Ashley should be less confident that her
hypothesis is correct?
A. She grew the seeds only in salt water and did not have seeds growing that
were given fresh water as a control for the experiment.
B. She placed the container in sunlight only and should have placed another
container in the dark as a control for the experiment.
C. She planted ten seeds in the same container when she should have planted
only one seed to keep the experiment controlled.
D. She planted the seeds in only one container with soil when she should have
used two containers, filling one with sand.
A researcher is designing an investigation to see which
medicine is the most
effective against skin infections that are caused by
bacteria. She can use the following for her experiment:
• Four different types of medicines
• Samples of infected skin cells from three different
species
• Three lights for setup
• Three locations with different temperatures
Which statement describes the setup that will provide
the data the researcher needs to answer her purpose?
F. Change the medicine used but keep the light,
temperature, and skin cells the
same
G. Use each type of skin cell and keep the medicine,
light, and temperature the
same
H. Try different temperatures and medicine with the
light and skin cells staying the
same
J. Use different lighting and medicine with the same
temperature and skin cells
Alicia performed the following steps of an
investigation:
1) She added a few drops of red food coloring to 50
milliliters of water in a clear
plastic bottle.
2) She shook the bottle.
3) She added 20 milliliters of yellow vegetable oil,
replaced the cover, and shook the
bottle forcefully.
4) She left the bottle undisturbed overnight.
Which of these was the appearance of the mixture
the next morning?
F. A yellow liquid layer on top of a red liquid layer
G. Three equal layers of clear, red, and yellow
liquids
H. Thick paste on top of a red liquid layer
J. An evenly mixed orange liquid
Which two human body systems help
with the breakdown of food and
absorption of nutrients?
A. Circulatory and muscular
B. Digestive and circulatory
C. Muscular and reproductive
D. Reproductive and digestive
Which adaptation helps the scarlet king snake survive in its
environment?
A. It reproduces between 4 and 20 eggs.
B. It usually grows to between 2 and 4 feet long.
C. It can live in deserts, wetlands, and grasslands.
D. It looks like the poisonous coral snake to confuse predators.
•
Anita has a small sample of an unknown element
that she is trying to identify. Anita divides the mass
of the sample by its volume.
Which property of matter is Anita using to identify the
element?
F. Weight
G. Density
H. Texture
J. Freezing point
Eduardo found an object in a nearby lake.
Which of these must Eduardo find in the object for it to
be identified as a living organism?
A. Blood
B. Cells
C. Heart
D. Skin
Mariah is pedaling her bicycle very fast. She suddenly takes her
feet off of the pedals.
Which statement describes the motion of the pedals
immediately after she removes her feet?
A. The pedals stop instantly due to the friction of the tires.
B. The pedals begin to move backwards at the same speed.
C. The pedals move at the same speed but begin to move faster.
D. The pedals move in the same direction but start to slow down.
In the temperate forests of
China, the red panda and the
giant panda are part of the
same food web. Both rely
directly on bamboo for energy.
Which statement describes the
pandas in this food web?
Which of these effects does a prism
have on light?
F. It reflects the light.
G. It focuses the light.
A. Producers
H. It refracts the light.
B. Decomposers
J. It absorbs the light.
C. Primary consumers
D. Secondary consumers
Dominick attached a metal ball to the end of a string and swung it over
his head in a circular motion at a constant speed. After several swings,
the string broke. The metal ball moved outward and eventually fell to
the ground.
Which of these made the metal ball fall to the ground?
F. Mass
G. Gravity
H. Friction
J. Magnetism
In the mid-1800s, work was done by
scientists to understand infectious diseases.
Scientists came up with what is called the
“germ theory of disease.” This theory says
that infectious diseases are caused by
pathogens.
Pathogens can be spread from one organism
to another. In the 1880s, a German doctor
named Robert Koch found that each
infectious disease is caused by its own
pathogen.
Which adaptation helps the scarlet
king snake survive in its environment?
A. It reproduces between 4 and 20 eggs.
B. It usually grows to between 2 and 4 feet long.
Which of these is the benefit of
understanding that each disease is caused by
a different pathogen?
C. It can live in deserts, wetlands, and grasslands.
F. It helps doctors diagnose the symptoms of
confuse predators.
the disease quickly.
G. It can increase the natural defenses of the
human body to pathogens.
H. It can destroy illnesses before they have
been discovered by doctors.
J. It helps determine whether a particular
pathogen causes a certain illness.
D. It looks like the poisonous coral snake to
Toby has two beakers of liquid at
room temperature. He places both
beakers on a hot plate. The liquid in
Beaker A boils before the liquid in
Beaker B.
Which statement explains why the
liquid in Beaker A boiled before the
liquid in Beaker B?
F. Beaker A has a lower boiling
point.
G. Beaker B has a higher freezing
point.
H. The liquid in Beaker A has less
mass.
J. The liquid in Beaker B has a lower
density.
Which of these is an example of
sexual reproduction?
F. Production of seeds in flowers
G. Vegetative propagation in leaves
H. Fruiting in fungi
J. Budding in yeast
Helen puts four different spoons in a bowl of hot
water. Each spoon is made of one
of the following materials:
• Plastic
• Rubber
• Silver
• Wood
Which spoon will be the warmest after two minutes?
F. Plastic, because it is a poor electrical conductor
G. Rubber, because it is a good electrical insulator
H. Silver, because it is a good thermal conductor
J. Wood, because it is a good thermal insulator
Kelly shines a flashlight at a wall.
The beam of light creates a bright
spot on the wall. Kelly holds up a
piece of black cardboard in front
of the light. This stops the beam
of light, and it does not shine on
the wall.
Which effect does the black
cardboard have on the beam of
light?
A. Absorption
B. Brightness
C. Reflection
D. Refraction
The Bactrian camel has humps made
of fat that it can use for energy when
needed. The kangaroo rat does not
drink water; it gets all it needs from
food that it eats.
Which statement describes how
these adaptations affect the Bactrian
camel and the kangaroo rat?
F. Allow them to survive a drought
G. Increase their ability to catch prey
H. Allow them to scare their
predators
J. Make them blend into the
environment
Which term describes when a substance
is changed from a liquid to a gas?
A. Condensation
B. Evaporation
C. Filtration
D. Precipitation
What type of tissue is
attached to the skeletal
system and helps bones
move?
F. Muscle tissue
G. Cardiac tissue
H. Adipose tissue
J. Epithelial tissue
Kareem wants to dissolve rock salt in
a glass of water at room temperature.
Which process will speed up the time
it takes for the salt to dissolve?
A. Add hot water to the glass.
B. Add cold water to the glass.
C. Pour the water into a larger container.
D. Pour the water into a smaller container.
Many species of birds are born with
a small, toothlike structure called an
egg tooth at the end of the beak.
A few days after the bird is born,
it loses this structure.
How does the egg tooth help the
species survive?
F. The egg tooth helps the bird hatch
through its egg.
G. The egg tooth helps the bird
attack its first prey.
H. The egg tooth helps the bird eat
its first meal.
J. The egg tooth helps the bird
defend itself.
Justine and Teresa are each pushing separate boxes across
the same floor. The boxes
are the same shape, but Justine’s box is twice the mass of
Teresa’s box. Teresa sets her
box in motion by applying a force of 35 newtons (N).
Which force does Justine need to apply to set her box in
motion?
F. 18 N
G. 35 N
H. 70 N
J. 140 N
American scientist Thomas Francis researched Type
A influenza, which is the virus
that causes the flu. Francis was trying to develop a
cure and discovered another kind
of influenza called Type B. Type B is less common
than Type A and is found almost
exclusively in humans.
Amanda tested toy car tires to see which
would go down a ramp the most slowly.
She found that the tire that caused the
most friction moved down the ramp the
most slowly.
Which of these is the benefit of discovering that
there is more than one type of
influenza?
Which properties did the tires that
moved the most slowly have?
F. People may spread the illness more slowly.
A. Round shape and a smooth material
G. People will be able to avoid getting the illness.
H. Scientists may find a cure faster for other types of
illnesses.
J. Scientists can identify the illness faster by its own
symptoms
B. Round shape and a rough material
C. Oval shape and a smooth material
D. Oval shape and a rough material
Which statement describes asexual and sexual
reproduction?
A. Asexual is one part of sexual reproduction.
B. Sexual reproduction happens before asexual.
C. Asexual needs one parent, and sexual needs two
parents.
D. Sexual happens only in animals, and asexual
happens only in plants.
Carlos was asked to bring an example
of a mixture to class.
Which of these should Carlos bring as
his example?
F. Salt
G. Sugar
H. Salt water
J. Cold water
Which structure is the direct result of
sexual reproduction?
A. Cone
B. Flower
C. Seed
D. Spore
Which is an example of a chemical
change?
F. Milk cooling in a refrigerator
G. Pouring milk into a glass
H. Stirring a glass of milk
J. Milk turning sour
Josie investigated chemical and
physical changes using eggs. She
did
the following four actions to
four
different eggs:
• Boiled
• Cracked
• Fried
• Scrambled
Which action describes a
physical change?
F. Boiled
G. Cracked
H. Fried
J. Scrambled