Scientific Method
Variables
Science Lab Safety
Grab Bag
Characteristics of Life
100
Science often depends on engineering advances. Which tool allowed scientists to observe organisms too small to see with the naked eye?
A telescope
B stethoscope
C microscope
D spectroscope
C microscope
100
An independent variable is—
A The variable that reacts
B The variable held constant
C The variable that was changed
D The final result of the experiment
What is C The variable that was changed
100
Making unknown chemicals together in a lab is-
A Ok if you tell your teacher
B Ok if you tell your lab partner
C Dangerous and you should NEVER do it
D Ok if you do it in small batches
What is C Dangerous and you should NEVER do it
100
Which of the following characteristics of life explain why birds fly south for the winter?
A respond to environment
B growth and development
C made of cells
D reproduce
A respond to environment
100
Another term for living thing is-
A organism
B homestasis
C alive
D stimuli
A organism
200
The following statement would be an example of what part of the scientific method? "If leaf color change is related to temperature, then exposing plants to low temperatures will result in changes in leaf color."
A A solution to the problem
B an observation
C a hypothesis
D a scientific theory
What is a hypothesis
200
Which of the following is an example of a dependent variable?
A how much a plant grows in different amounts of light
B the different monkeys you use to see which one can jump the highest
C the different trees you measure to see which one is the tallest
D the different kinds of fertilizer u use to see which causes the most growth
What is A how much a plant grows in different amounts of light
200
If you became injured during a lab, what is the first thing you should do?
A Tell the teacher immediately
B Clean yourself up quickly before anyone else sees what happens
C Wait until you finish before you tell the teacher
D Ask your friend to help you
What is A Tell the teacher immediately
200
All of the following are characteristics of life except-
A made of cells
B reproduces
C grows and develops
D responds to stimulus
E moves
F needs water
E moves
200
Which of the following is not necessarily a characteristic of living things?
A movement
B growth and development
C reproduction
D made of cells
A movement
300
The platform upon which we put the slide on the microscope is called the-
A stage
B coarse focus
C diaphram
D light source
What is A stage
300
Bell pepper plants were studied to determine how different amounts of fertilizer affected the speed of plant growth. Which of the following was the dependent variable in the study?
A amount of fertilizer
B temperature
C speed of plant growth
D amount of water
What is C speed of plant growth
300
To prevent accidents during lab activities with chemicals and equipment you should-
A Follow your teacher's directions
B Let another group do the experiment
C Watch someone else
D Ask your lab partner what is the best way to do the lab
What is A Follow your teacher's directions
300
A lion is capable of gaining weight at very fast rates in its early years of life. This is an example to show that all living things:
A reproduce
B grow
C are made of cells
D all of the above
B grow
300
Two students were looking at a leaf that was brown and dried out. Student A said, “I would call this nonliving.” Student B said, “I think it’s better to say that it is dead.” Which student do you agree with and why?
A Student A because a leaf is not a living part of a plant
B Student A because a leaf can't breathe or reproduce
C Student B because a leaf was once living
D Student B because a leaf is made of cells
C Student B because a leaf was once living
400
What is the volume of the rock sample? (make sure to use the label mL after your measurement)
A. 20
B. 30
C. 100
D.90
What is B 3
400
A student designed an investigation to test the effect of various liquids on plant growth. What was the independent variable in the investigation?
A size of pot
B type of liquid
C amount of soil
D height of plant growth
What is B type of liquid
400
You and a partner are conducting an experiment in a lab, when your partner drops a glass jar. What do you do first?
A Nothing, just keep working
B Tell your partner to clean it up
C Clean up the glass yourself
D Inform the teacher to prevent being cut by the broken glass
D Inform the teacher to prevent being cut by the broken glass
400
In the spring of 2007, the bear population of Aroostook County, Maine increased by 400 bears because they mated and had offspring. This is an example which shows that all living things:
A reproduce
B respond to stimuli
C are made of cells
D grow and develop
A reproduce
400
Which of the following explains why humans sweat when they get hot?
A to maintain stable internal conditions (homeostasis)
B use energy
C growth and development
D All of the above
A to maintain stable internal conditions (homeostasis)
500
The graph shows the percent of seeds from two plant species that sprout when grown in water containing different amounts of salt. What is the independent variable?
A seeds that sprout
B type of plant
C salinity of water
D species of seed
What i C salinity of waters
500
The part of an experiment in which all conditions are kept the same and you compare your data against is the _____.
A hypothesis
B control
C independent variable
D dependent variable
What is B control
500
When you put brine shrimp eggs in three kinds of liquid, they only hatch in what type of water?
A pure water
B sugar water
C salt water
D pond water
C salt water
500
A student found a little pile of material that looked like tiny beads near a tree on her street. She thought that they were dormant organisms. What did she mean by that?
A a state where the tree's seed died and will not grow
B a state of suspended activities where organisms are dead
C a state of suspended activity where organisms are alive but active
D a state of suspended activity where organisms are alive but inactive
D a state of suspended activity where organisms are alive but inactive
500
The difference between non-living and dead is-
A there is no difference
B dead means that the organism was once living and non-living means that it was never living
B dead means that the organism was once living and non-living means that it was never living