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Worksheets7th Grade Final Exam Review
Total questions: 35
Worksheet time: 1hrs 8mins
Three situations in which force is applied to a box are illustrated. What conclusion can you draw?
More work is done in Situation 2 than in Situation 1. The most work is done in Situation 3.
More work is done in Situation 3 than in Situation 1. No work is done in Situation 2.
No work is done in Situation 2. More work is done in Situation 3 than in Situation 1.
No work is done in Situation 2. The same amount of work is done in Situations 1 and 3.
The table provides data on the force applied to three objects and the distance over which this force was applied. What correctly ranks the objects from least to most work done on each object?
Object Y, Object Z, Object
Object Z, Object X, Object Y
Object X, Object Y, Object Z
Object Y, Object X, Object Z
Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?
chemical to mechanical to electrical to radiant
radiant to electrical to sound
chemical to radiant to mechanical to electrical
electric to radiant to chemical
A student’s model of an area near a city depicts many activities that affect the quality of the water in the area.
How does the agricultural activity most likely affect the surface water of the area?
Excess crop fertilizer is carried by runoff into the river, causing excess growth of water plants.
Excess crop material accumulates on the riverbanks, slowing the movement of the river water.
Crops reduce erosion, increasing the amount of soil entering the river.
Crops absorb pure water from soil, causing the remaining water to contain more salt.
The removal of sediment from one location to another
weathering
erosion
deposition
oxidation
The process of laying down or settling of sediment
weathering
erosion
deposition
oxidation
because of the effect they can have on the environment.
Which of the following is a possible negative effect of the use
of these chemicals on the environment?
These chemicals are expensive to produce.
How do astronauts counteract the effects of microgravity on their bones while they are in space?
monitor sensors outside the space station
consume twice as many calories as normal
use exercise equipment on the space station
breathe at a faster rate than normal
Use the desert food web above to answer the following question:
How is this ecosystem MOST likely to be affected by a sudden decrease in the number of rats?
The snake population will increase.
There will be a decrease in the number of snakes, coyotes, and
hawks.
There will be an increase in the number of coyotes and hawks.
There will be a decrease in the number of cacti and sagebrush
plants.
Based on the table, which of the following is most likely true?
Ecosystem Q will sustain itself longer than Ecosystem T, because Ecosystem Q has the least amount of organisms to support.
Ecosystem R will sustain itself longer than Ecosystem T, because Ecosystem R has a more even distribution of organisms.
Ecosystem S will sustain itself longer than Ecosystem R, because Ecosystem S has more organisms in total.
Ecosystem T will sustain itself longer than Ecosystem Q, because Ecosystem T has a more dominant species in its environment
The food webs model relationships among the organisms in two ecosystems.
Which ecosystem would be more likely to survive if a disease killed the grasses?
The forest ecosystem, because most of the animals can eat other organisms.
The grassland ecosystem, because several predators compete for food.
The forest ecosystem, because it has three top predators.
The grassland ecosystem, because it has many herbivores.
