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WorksheetsScience BM Review
Total questions: 44
Worksheet time: 42mins
Name
Class
Date
1.
True or False: The Earth is located in the Milky Way Galaxy
a)
True
b)
False
2.
What type of galaxy is pictured here?
a)
Spiral
b)
Barred Spiral
c)
Elliptical
d)
Irregular
3.
Which of the following is a unit for velocity?
a)
ft/s
b)
m
c)
mi/hr2
d)
m/h north
4.
Newton's first law of motion is also called the law of...
a)
Acceleration
b)
Lies
c)
Inertia
d)
Force
5.
Which of the following situations shows work being done?
a)
A student is sitting in a chair and holding both boxes.
b)
A student is holding the large box 1 m above the floor.
c)
A student is standing and holding the small box.
d)
A student is lifting the small box 0.5 m from the floor to a table
6.
A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14.7 g and a volume of 2.2 cm3 . What is the density of the mineral sample?
a)
0.15 g/cm3
b)
32 g/cm3
c)
13 g/cm3
d)
6.7 g/cm3
7.
The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck —
a)
can accelerate faster than the other two vehicles
b)
can accelerate faster than the other two vehicles
c)
is traveling on a curve in the road
d)
needs a large amount of force to move
8.
The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?
a)
Earth is part of this galaxy
b)
Many more stars exist outside the galaxy
c)
The star in the center of the galaxy are extremely small
d)
The center of the galaxy consists of a dense cluster of stars
9.
*
a)
Boron (B)
b)
Carbon (C)
c)
Neon (Ne)
d)
Sodium (Na)
10.
Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?
a)
The car with the smaller mass will require less force to stop than the car with the larger mass.
b)
The car with the larger mass will maintain its velocity while traveling down the hill.
c)
The car with the smaller mass will take longer to stop than the car with the larger mass
d)
The car with the larger mass will have less inertia than the car with the smaller mass
11.
5 Which of the following best describes an electron?
a)
It has no charge and about the same mass as a proton.
b)
It has a negative charge and much less mass than a proton.
c)
It has a positive charge and much more mass than a neutron.
d)
It has a negative charge and about the same mass as a neutron.
12.
*
a)
Equator
b)
North Pole
c)
Tropic of Cancer
d)
Tropic of Capricorn
13.
*
a)
Position 1
b)
Position 2
c)
Position 3
d)
Position 4
14.
A scientist spilled a few drops of dilute hydrochloric acid (HCl) on a lab table. For safety purposes, the scientist sprinkled some baking soda (NaHCO3) onto the spill. Which observation would provide the best evidence that a chemical reaction occurred?
a)
The baking soda and hydrochloric acid combined, and bubbles formed
b)
The baking soda absorbed the hydrochloric acid.
c)
Some of the baking soda dissolved in the hydrochloric acid
d)
The hydrochloric acid evaporated, leaving only the baking soda.
15.
What is one condition that is necessary for a hurricane to form?
a)
Warm ocean water
b)
A strong cold front
c)
Cold ocean water
d)
A strong warm front
16.
*
a)
1
b)
2
c)
3
d)
4
17.
*
a)
1
b)
2
c)
3
d)
4
18.
An object will continue moving in a straight line unless it is acted on by an unbalanced force. Which of the following best explains Earth’s motion?
a)
There is no unbalanced force acting on Earth because space is empty and nothing touches Earth.
b)
The gravitational force pulling Earth toward the sun is equal and opposite to the force pulling the sun toward Earth, so there is no unbalanced force acting on Earth.
c)
The sun moves in an elliptical orbit around Earth, and the sun’s gravity pulls Earth along.
d)
Earth moves in an elliptical orbit around the sun because the gravitational force of the sun attracts Earth.
19.
*
a)
Grasshoppers and snakes
b)
hawks and frogs
c)
frogs and snakes
d)
decomposers and grasses
20.
*
a)
F
b)
G
c)
H
d)
J
21.
While exploring a lake in Argentina, Laguna del Diamante (Diamond Lake), scientists found rocks covered with mats made of photosynthetic microbes. Flamingos in the area filter the nutrient-rich microbes by pumping the lakewater through their bill. What is the relationship between the photosynthetic microbes and the flamingos in the Laguna del Diamante ecosystem?
a)
The microbes are parasites, and the flamingos are hosts.
b)
The microbes are carnivores, and the flamingos are predators.
c)
The microbes are herbivores, and the flamingos are carnivores.
d)
The microbes are producers, and the flamingos are consumers.
22.
Hay is made up of organic compounds. What are the main elements in many organic compounds?
a)
Helium, Carbon, Sodium
b)
Sodium, Hydrogen, Nitrogen
c)
Carbon, Hydrogen, Oxygen
d)
Radon, Oxygen, Helium
23.
Some students take care of a vegetable garden. When it is time to plant in the spring, the students leave part of the garden empty in order to observe ecological succession. Which of these will most likely occur first?
a)
development of topsoil
b)
growth of weeds and grasses
c)
growth of trees and shrubs
d)
development of a stream
24.
When trying to identify an unknown element, a scientist determines what other elements the unknown element reacts with chemically. Which property of the unknown element determines the other elements it reacts with?
a)
The total number of neutrons in the unknown element
b)
The total number of particles in the nucleus of the unknown element
c)
The number of protons in the nucleus of the unknown element
d)
The number of valence electrons in the unknown element
25.
Plants use energy from sunlight, water, and carbon dioxide to produce sugar. Which structure is found only in plant cells and helps plants capture energy from sunlight?
a)
vacuole
b)
nucleus
c)
chloroplast
d)
cell membrane
26.
**
a)
peninsula
b)
volcano
c)
delta
d)
plateau
27.
**
a)
13N
b)
7N
c)
8N
d)
12N
28.
**
a)
1
b)
2
c)
3
d)
4
29.
**
a)
mechanical -> light -> chemical
b)
chemical -> mechanical -> thermal
c)
thermal -> chemical -> light
d)
chemical -> thermal -> mechanical
30.
An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom’s nucleus?
a)
+25
b)
+30
c)
-25
d)
-30
31.
**
a)
condensation of water vapor
b)
surface runoff of precipitation
c)
conservation of water
d)
pollution of groundwater
32.
**
a)
the mass of a the plates
b)
the weight of the plates
c)
unbalanced force
d)
gravitational force
33.
Baleen whales eat zooplankton by taking a large amount of water into their mouth. These whales use special structures in their mouth to separate zooplankton from the water. Because baleen whales eat zooplankton, they are classified as —
a)
producers
b)
predators
c)
parasites
d)
hosts
34.
A student keeps a record of the phases of the moon for one month. On the first night of the student’s observations, the full moon is visible in the sky. After the full moon, which of these phases will the student observe next?
a)
waxing crescent moon
b)
waxing gibbous moon
c)
waning crescent moon
d)
waning gibbous moon
35.
**
a)
fungi
b)
eubacteria
c)
plantae
d)
animalia
36.
**
a)
CO
b)
H2O
c)
CO2
d)
H2
37.
**
a)
Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K, and is red.
b)
Barnard’s Star is less bright than the sun, has a surface temperature above 3,800 K, and is red.
c)
Barnard’s Star is brighter than the sun, has a surface temperature below 5,300 K, and is yellow.
d)
Barnard’s Star is brighter than the sun, has a surface temperature above 5,300 K, and is yellow
38.
**
a)
no longer tilted on its axis
b)
stopped rotating on its axis
c)
took an additional month to orbit the sun
d)
revolved around the sun in the opposite direction
39.
**
a)
one of the original compounds came out of solution
b)
the solutions reacted chemically
c)
some of the water froze into ice crystas
d)
rapid evaporation of water occurred, leaving a solid
40.
Why does Earth get more energy from the sun than from all the other stars in the universe combined?
a)
the sun is much larger than the other stars
b)
the sun is much hotter than the other stars
c)
the sun is much more dense than the other stars
d)
the sun is much closer than the other stars
41.
**
a)
the boat will move slower
b)
the boat will move faster
c)
the boat will stop
d)
the boat will move to the west
42.
What is the Hertzsprung-Russell diagram?
a)
Graph astronomers use to measure a stars surface temperature, and distance.
b)
Graph astronomers use to measure radiation and distance from Earth.
c)
Graph astronomers use to measure stars, surface temperature, and absolute brightness.
d)
Something that shows a star's apparent and absolute brightness.
43.
What is a nebula?
a)
all the space and everything in it
b)
A small cloud of gas and dust.
c)
A high mass star.
d)
A large cloud of gas and dust in space.
44.
What does this picture depict?
a)
H-R diagram
b)
Life of a low mass star
c)
Life of a massive star
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