Name:____________________ Date: ______________Class:______
6.2 Work and Space
On Level Exam
2016-2017
15441
1. (7.7 A) Karyn needs to lift a large box into the back of a pickup truck. Why would it be easier for her to
push the box up a long ramp rather than just lift it into the truck?
A.
B.
C.
D.
The ramp decreases the kinetic energy of the box.
The ramp decreases the amount of gravity on the box.
The ramp decreases the force needed to move the box.
The ramp decreases the weight of the box.
2. (7.7 A) A batter walks up to home plate with his bat, stands with his bat in the air, swings his bat, and
makes contact with the ball. In which part of this situation is NO work occurring?
A.
B.
C.
D.
batter walks up to home plate with his bat
batter stands with his bat in the air
batter swings the bat
batter makes contact with the ball
3. (7.7A) Paul is moving two identical boxes as shown below. He picks up one box and lifts it 1 meter straight
up. This requires 180 N of force. He pushes the second box up a ramp that is 3m long. This requires 60 N
of force.
Which statement best describes the amount of work Paul accomplished when moving the two boxes?
A.
B.
C.
D.
It requires 3 times more work to lift the box straight up.
Lifting the box straight up is requires one-third the work.
Pushing the box up the ramp requires 120 N less work.
It requires the same amount of work to move each box.
4. (7.7A) What can be concluded based on the scenarios below?
Scenario 1: Larry carried an empty backpack to his locker after first period; this took a force of 1N and he
covered a distance of 7m.
Scenario 2: After lunch Larry carried all of his books in his backpack to his 5th period class- this took a force of
35 N as his books are very heavy. It took him 3 minutes to get to his class and he covered 180 m.
Scenario 3: At the end of the day Larry walked home with only his math book- this took a force of 5 N. It took
Larry 1200 m to get to his house.
A.
B.
C.
D.
Scenario 1 requires the most work
Scenario 2 requires the most work
Scenario 3 requires the most work
Scenario 2 requires the least work
For the diagram below, assume the same barrel is used and same person are in both scenarios.
5. (7.7A) In the diagrams above, who is doing more work to move the barrel into the truck?
A.
B.
C.
D.
The man using the short ramp
The man using the long ramp
They are both doing the same amount of work.
There is not enough information to tell.
6. (7.7A) In the diagrams above, who has to use more force to move the barrel in the truck?
A.
B.
C.
D.
The man using the short ramp
The man using the long ramp
They are both using the same amount of force.
There is not enough information to tell.
Scientists have determined that there is a particular distance from the Sun that is most likely to allow life to
inhabit a planet. This area is called the habitable zone and is shaded in the picture below. Also, the planet
needs liquid water and oxygen present.
7. (7.9 A) Based on the information shown above, which would be the BEST planet to observe for life?
A. A
B. B
C. C
D. D
8. (7.9 A) Which of the following reasons explains why water is important to sustaining life on our planet?
A.
B.
C.
D.
Water (H2O) is NOT easily available
Water allows for decomposers to grow
Water is required for all living things
Water supplies our atmosphere with oxygen to breathe.
9. (7.9A) Which of the following is one of the main reasons that Earth has a much thicker atmosphere than
Mars and Mercury do?
A. Mars and Mercury are too close to the sun.
B. No liquid water exists on Mars and Mercury.
C. The gravitational pull of Mars and Mercury is too small.
D. Ultraviolet radiation from the sun burned away the atmospheres of Mars and Mercury.
10. (7.9A) Which phenomena make it possible for water to exist in all three states on Earth?
A. the large size of Earth’s radius and mass
B. the presence of Earth’s moon and the moon’s orbit
C. the presence of plants and animals on Earth’s surface
D. the spinning of Earth’s rotation and its distance from the sun
11. (7.9 B) Which ways, listed below, can plants help meet the needs of the astronauts on their mission?
I. Producing oxygen and reducing carbon dioxide
through photosynthesis.
II. Producing large amounts of water.
III. Providing food to supplement the food supply.
IV. Looking nice for the astronauts.
A.
B.
C.
D.
I and III
I and IV
II and IV
II and III
12. (7.9 B) In an environment with limited gravity compared to Earth, such as on the International Space
Station, astronauts must exercise in order to minimize _______.
A.
B.
C.
D.
memory loss
muscle loss
oxygen loss
water loss
13. (7.9 B) To allow its passengers to survive in space for several weeks, the design of a spacecraft must be
MOST like that of a —
A.
B.
C.
D.
car
bicycle
boat
submarine
14. (7.9B) What is the purpose of a rocket (labeled “B” on the below diagram) during
launch of a spacecraft?
A. to provide enough power to overcome Earth’s gravity to enter into outer
space
B. to help steer the spacecraft into orbit once it reaches outer space
C. to balance the spacecraft as it moves out of Earth’s atmosphere
D. to prevent the spacecraft from moving faster than the orbital speed around
the sun
15. (7.11C) Some dairy farmers want to increase the amount of milk produce by their cows. How can the
farmers use selective breeding to increase milk production?
A.
B.
C.
D.
By increasing the age of the cows that are bred.
By choosing cows that are high milk producers
By limiting the number of offspring per cow
By choosing cows that can produce milk after eating the most food
16. (7.10B) Tropical Rainforests have the greatest biodiversity of any type of land ecosystem.How does
biodiversity contribute to the sustainability of an ecosystem?
A. The presence of more species with different adaptations makes it more likely that some organisms will
survive an ecological disaster.
B. Greater genetic variation within species makes it more likely that some individuals will survive the
outbreak of disease.
C. The presence of a variety of herbivore species that can feed a large number of different producer
species helps ensure abundant prey for predators in the ecosystem.
D. All of the above.
17. (7.10C) Both primary and secondary succession being with pioneer species thatA.
B.
C.
D.
change the area and make it safer from predatory organisms
invade the area so that new organisms cannot be established
modify the area and allow larger and more complex organisms to appear
use up all the existing resources and prevent the establishment of non-native organisms
18. (6.12D) Which list of characteristics describes organisms classified as animals?
A.
B.
C.
D.
Unicellular, prokaryotic, autotrophic
Multicellular, eukaryotic, heterotrophic
Unicellular, eukaryotic, heterotrophic
Multicellular, eukaryotic, autotrophic
19. (8.11A) The partial food web shown below is found in an aquatic environment. This type of environment
has many organisms in the same
trophic levels.
Which two types of organisms in this
aquatic food web have a producerconsumer relationship?
A. Microscopic algae and White
suckers
B. Small invertebrates and Amphipods
C. Phytoplankton and Mummichogs
D. Amphipods and Channel catfish
20. (7.5C) The flow of energy in some Australian food chains is modeled in the energy pyramid below.
Based on the model, which consumers would receive the greatest amount of energy captured by the producers
in their food chains?
A.
B.
C.
D.
Wedge-tailed eagles
Chuditch
Ring-tailed opossums
Eucalyptus trees