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Instructions: Answer all questions to get your test result.
1) How might disease that killed the grasses in a area affect animals such as coyotes or mountain lions, which do not eat grass?
A
Decrease the number of animals on which they feed
B
Increase the food supply because small animals can no longer hide
C
No affect because coyotes and mountain lions don't eat grass
D
Increase the number of other predators that complete with them
2) Students were asked to record and compare the wind speeds observed every 10 minutes over a one-hour period. Which tool will best help conduct this investigation?
A
telescope
B
anemometer
C
binoculars
D
thermometer
3) A student heated a sample of room temperature water. The water began to boil after 5 minutes of heating. The student concluded that the water temperature increased at a rate of 20°C per minute. Which best describes an error in the students conclusion
A
The student should have measured the starting temperature of the water
B
The student should have measured the starting volume of the water
C
The student should have increased the amount of heat applied to the water
D
The student should have repeated the experiment
4) An engineer is designing a machine to reduce the force required to move objects. The engineer tests a prototype of the machine. Which tool should the engineer use to test the amount of force needed to move objects?
A
spring scale
B
thermometer
C
electronic balance
D
anemometer
5) For a science project, a group of students want to create a representation of how organisms depend on one another in a freshwater biome. Which procedure most likely needs to occur first in their project?
A
look for information that already exists about the biome
B
use a computer program to create the representation
C
introduce new species of animals into the biome and observe what happens
D
build a model of the biome
6) Scientists want to make rice healthier for humans. The scientists insert a gene found in bean plants into rice plants. The inserted gene increases the iron content of the rice. What is an intended benefit of this technology?
A
making the rice grow faster
B
giving the rice a greater nutritional value
C
giving the rice an improved flavor
D
making the rice pest resistant
7) Scientists developed a new antibiotic for patients to use to treat an illness caused by bacteria. Which of these is an unintended consequence of people using more antibiotic than needed to treat the illness?
A
bacteria that resists antibiotics
B
lower costs for treating patients
C
patients recovering more quickly
D
fewer people becoming ill
8) Which of these is the best example of an assistive technology that helps people overcome a disability?
A
a telephone that records digital voice messages from callers
B
an oven that contains a fan that moves hot air around
C
a computer program that can change text into spoken words
D
a television with a button that can lower the volume
9) Which of these scientific principles had to be studied before weather forecasting technologies could be developed
A
the difference between Earth and the sun
B
how changes in the atmosphere affect precipatation
C
pollution of the atmosphere by burning fossil fuels
D
how raindrops create rainbows
10) Which of the following is an intended benefit of technology?
A
Traffic backs up on all the roads near a newly made bridge
B
A pesticide kills all of the honeybees in an orchard
C
People using cell phones while driving cause an increase in highway fatalities
D
A new type of weather radar improves the ability to predict tornadoes
*select an answer for all questions
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