WorksheetsScience TMSCA 3
Total questions: 41
Worksheet time: 21mins
Name
Class
Date
1.
Insecticides are used to control insect populations so that they don't destroy crops. Over time, some insecticides become less effective at killing insects, and new insecticides must be developed. What is the most likely reason insecticides become less effective over time?
a)
Surviving insects have learned to include insecticides as a food source.
b)
Surviving insects pass their resistance to insecticides to their offspring.
c)
Insecticides build up in the soil.
d)
Insecticides are concentrated at the bottom of the food chain.
2.
Sugars are _______ composed of _______ which are made up of ________.
a)
molecules, atoms, compounds
b)
atoms, compounds, molecules
c)
molecules, compounds, atoms
d)
compounds, molecules, atoms
3.
Sunscreen is used to protect the skin from exposure to which type of solar radiation?
a)
visible
b)
X-rays
c)
infrared
d)
ultraviolet
4.
When male wolves place their scent on trees, they are most likely doing this in order to ________.
a)
attract female wolves
b)
attract prey
c)
mark their territory against other wolves
d)
mark the location of food supplies
5.
If both parents are heterozygous dominant for having brown eyes, what is the probability that one their children is going to have blue eyes? Assume that blue eyes (bb) is recessive, and brown eyes (BB) is dominant.
a)
75%
b)
25%
c)
50%
d)
100%
6.
What is the primary function of the large leaves found on seedlings growing in a forest?
a)
To provide shade for the root systems
b)
To get rid of excess water that is entering through the roots
c)
To allow for leaf damage by insects
d)
To gather as much light as possible for photosynthesis.
7.
Which one of the following characteristics is most likely to be found in mammals that are preyed on by other mammals for food?
a)
Eyes on the sides of the head
b)
Teeth that are long and pointed
c)
Claws on the feet
d)
Ears that cannot move
8.
What is the difference between primary and secondary succession?
a)
Primary succession doesn't start with bare rock but secondary does.
b)
Primary succession doesn't start with lichens but secondary does.
c)
Primary succession starts with trees, but secondary doesn't.
d)
Primary succession starts with bare rock, but secondary doesn't.
9.
Fill in the blanks in the correct order as it should appear.
Domain, Kingdom, ________, Class, Order, _________, Genus, Species
Domain, Kingdom, ________, Class, Order, _________, Genus, Species
a)
Phylum, Family
b)
Family, Genus
c)
Family, Species,
d)
Phylum, Class
10.
Because mosses and liverworts lack a vascular system, they usually live in places that are always _________.
a)
hot
b)
dry
c)
cold
d)
wet
11.
Carbohydrates are first to break down in the human _________.
a)
mouth
b)
stomach
c)
small intestine
d)
large intestine
12.
Human blood has a pH of between 7.38 and 7.42. This means blood is ________.
a)
very acidic
b)
slightly acidic
c)
very basic
d)
slightly basic
13.
Hot stars are ________.
a)
blue
b)
red
c)
yellow
d)
orange
14.
The body produces a protein called interferon when invaded by a(n) ________.
a)
virus
b)
antibody
c)
vaccine
d)
bacterium
15.
An atom of gold with 79 protons, 79 electrons, and 118 neutrons would have a mass number of ___________.
a)
39
b)
158
c)
197
d)
276
16.
Bile is released into the small intestine by the ____________.
a)
pancreas
b)
villi
c)
gallbladder
d)
stomach
17.
A photovoltaic converts __________ energy.
a)
radiant to electrical
b)
radiant to thermal
c)
electrical to radiant
d)
chemical to electrical
18.
Deoxyribonucleic acid is best referred to as ______.
a)
USA
b)
RNA
c)
DNA
d)
TMSCA
19.
The cross between an orange and a grapefruit to produce a tangelo is an example of ___________.
a)
sequencing
b)
selective breeding
c)
hybridization
d)
inbreeding
20.
_________ compounds make up over 90% of all known compound.
a)
Aromatic
b)
Basic
c)
Ionic
d)
Organic
21.
Noble gases are inert due to ____________________.
a)
their number of electrons in the outermost shell
b)
the form of their nuclei
c)
their special number of neutrons and protons
d)
their bonding with other elements.
22.
Unlike the sponges and coelentrates, all worms have a head and have _______________.
a)
segments
b)
bilateral symmetry
c)
cross-sectional symmetry
d)
radial symmetry
23.
What connects the two halves of the cerebrum?
a)
medulla oblongata
b)
corpus callosum
c)
cerebellum
d)
spinal cord
24.
The first law of thermodynamics states that ____________.
a)
energy can't be created or destroyed
b)
energy is converted into matter
c)
the amount of energy in the universe is always changing
d)
all of these
25.
Which of the following organisms are used to convert milk to yogurt?
a)
bacteria
b)
protozoa
c)
viruses
d)
algae
26.
Two open bottles, one filled with vinegar and the other with olive oil, were left out on a windowsill in the sun. Several days later, it was observed that the bottles were no longer full. What can be concluded from this observation?
a)
Vinegar evaporates faster than olive oil.
b)
Olive oil evaporates faster than vinegar.
c)
Both vinegar and olive oil evaporate.
d)
Direct sunlight is needed for evaporation.
27.
True or False: Some plants grow better if bone meal (ground-up bones) is spread around their roots.
a)
True
b)
False
28.
Which of the following was not a reason that famines occurred in the past?
a)
war
b)
insect infestation
c)
overpopulation
d)
volcanic eruption
29.
Tissues are found in living things. What is the definition of a living tissue?
a)
A group of cells with similar structure and function
b)
A group of cells with different structure and function
c)
A group of organelles contained inside a cell
d)
A group of substances that make up the walls of a cell
30.
Which is an example of a chemical reaction?
a)
water boiling
b)
sugar dissolving
c)
nails rusting
d)
wax melting
31.
Which statement best explains why mammals are found in very cold regions of the world but lizards are not?
a)
Both mammals and lizards are cold-blooded, but mammals have fur to keep them warm.
b)
Both mammals and lizards are warm-blooded, but lizards get too cold when they shed their skin.
c)
Since mammals, but not lizards, are warm-blooded, their body temperature will adjust to match the external environment.
d)
Since mammals, but not lizards, are warm-blooded, they will maintain their body temperature using heat from metabolic processes.
32.
Most granite caves are formed by the action of water on ________________.
a)
granite
b)
limestone
c)
sandstone
d)
shale
33.
Some chemical reactions absorb energy, while others release energy. Of the chemical reactions in burning coal and exploding fireworks, which will release energy?
a)
burning coal only
b)
exploding fireworks only
c)
both burning coal and exploding fireworks
d)
neither burning coal nor exploding fireworks
34.
The nucleus of MOST atoms consists of _____________.
a)
neutrons only
b)
protons and neutrons
c)
protons and electrons
d)
neutrons and electrons
35.
A son can inherit traits ___________.
a)
only from his father
b)
only from his mother
c)
from both his father and mother
d)
from either his father or mother, but not from both
36.
What most likely happened to species that are found in the fossil record but have no living members?
a)
They had offspring of a different species.
b)
They mutated to other species.
c)
They became extinct.
d)
They never really existed.
37.
Many homes use the reaction between methane, from natural gas, and oxygen for heating in the winter. What characteristic of the reaction between methane and oxygen makes it most useful for this purpose?
a)
It releases water vapor.
b)
It uses atmospheric oxygen.
c)
It is an exothermic reaction.
d)
It is a neutralization reaction.
38.
The Venus flytrap is a plant that both produces its own food through photosynthesis and obtains nutrients by consuming insects. Which of the following best describes the relationship between the Venus flytrap and the fly?
a)
parasitic
b)
competitive
c)
mutual
d)
predator-prey
39.
The walls of a building are to be painted to reflect as much light as possible. What color should they be painted?
a)
White
b)
Yellow
c)
Black
d)
Red
40.
Astronomers view objects in space through scientific instruments called _____________.
a)
telescopes
b)
hygrometers
c)
barometers
d)
microscopes
41.
Tony always drinks water before and after his long bike rides. Why does his body need water when he exercises?
a)
Drinking water after exercise allows the body to sleep.
b)
Drinking water after exercise helps to replace lost fluids.
c)
Drinking water before exercise helps increase the heart rate.
d)
Drinking water before exercise prevents the body from sweating.
100 %
