Biotic/Abiotic Factors & Earth's System
A group of parts that work together as a whole defines a(n)
a) equilibrium
b) system
c) homeostasis
d) evolution
b) system
In order to make observations, an observer must always use
a) experiments
b) the senses
c) proportions
d) mathematical calculations
b) the senses
Which question would be the best high level scientific question?
a) How many giraffes live in Africa?
b) Who made the first microscope?
c) How long ago did dinosaurs live on the Earth?
d) Does the amount of salt in water affect the temperature at which it boils?
d) Does the amount of salt in water affect the temperature at which it boils?
When you decide whether or not the data supports the original hypothesis, you are
a) drawing conclusions
b) forming a hypothesis
c) asking questions
d) making observations
a) drawing conclusions
The length of a garden snail would be measured in meters using a
a) thermometer
b) graduated cylinder
c) measuring tape
d) balance
c) measuring tape
Glaciers, icebergs, and snow are all examples of the
a) cryosphere
b) atmosphere
c) biosphere
d) geosphere
a) cryosphere
An interpretation based upon an observation is called
a) a fact
b) an inference
c) a classification
d) a measurement
b) an inference
Which sequence of steps is most likely taken in an experiment?
a) select materials, formulate a conclusion, develop a hypothesis, test the hypothesis
b) develop a hypothesis, test the hypothesis, formulate a conclusion, select materials
c) develop a hypothesis, select materials, test the hypothesis, formulate a conclusion
d) formulate a conclusion, select materials, develop a hypothesis, test the hypothesis
c) develop a hypothesis, select materials, test the hypothesis, formulate a conclusion
Diagrams, tables and graphs are used by scientists mainly to
a) design a research plan for an experiment
b) organize data
c) test a hypothesis
d) predict the independent variable
b) organize data
The volume of a liquid is measured in mL using a
a) ruler
b) balance
c) test tube
d) graduated cylinder
d) graduated cylinder
Which of the following would be a biotic factor in an ecosystem?
a) Bacteria
b) Soil
c) Temperature
d) Rainfall
a) Bacteria
Which of the following is an example of a qualitative observation?
a) The six pairs of robins hatched an average of three chicks each.
b) The temperature decreased from 20∘C to 15∘C.
c) The fish swam in a zigzag motion.
d) The contents of the stomach are mixed every 20 seconds.
c) The fish swam in a zigzag motion.
In an experiment, the one variable that is changed is called the
a) dependent variable
b) experimental variable
c) independent variable
d) controlled variable
c) independent variable
Which statement most likely describes an indirect change?
a) one variable increases, while the other remains the same
b) variables repeat in a pattern
c) both variables increase or decrease together
d) one variable increases, while the other decreases, or vice versa
d) one variable increases, while the other decreases, or vice versa
Using a metric ruler, a student measured a larva to be 1.5 cm. What is the length of the larva in mm?
a) 0.15 mm
b) 15 mm
c) 150 mm
d) 1500 mm
b) 15 mm
Which list includes only abiotic factor?
a) Ducks, fish, soil, and water
b) Soil, water, air, and sunlight
c) Humidity, temperature, rodents, and grasses
d) Trees, flowering plants, mosses, and. ferns
b) Soil, water, air, and sunlight
Which of the following statements are observations?
a) The container is filled to the 350 mL mark with water.
b) The caterpillar did not eat the moth because it is not a carnivore.
c) Dinosaurs died out when they could not adapt to the changing climate.
d) The Sun rose at 6:54 this morning.
a) The container is filled to the 350 mL mark with water.
d) The Sun rose at 6:54 this morning.
In an experiment, what should be the relationship between the control group and the experimental group?
a) The should be different in size
b) They should resemble each other in at least two respects
c) They should not be similar in any respect
d) They should be identical in all respects except one
d) They should be identical in all respects except one
Which statement most likely describes a static relationship?
a) one variable increases, while the other remains the same
b) variables repeat in a pattern
c) both variables increase or decrease together
d) one variable increases, while the other decreases, or vice versa
a) one variable increases, while the other remains the same
What is the density of a ball that has a mass of 20 g and a volume of 10 cm3?
a) 0.2 g/cm3
b) 2 g/cm3
c) 20 g/cm3
d) 200 g/cm3
b) 2 g/cm3
What are the abiotic factors that characterize a forest ecosystem?
a) Light and biodiversity
b) Types of producers and decomposers
c) Temperature and amount of available water
d) pH and number of heterotrophs
c) Temperature and amount of available water
Which of the following statements are qualitative observations?
a) The temperature of the liquid rose to 97.8 oC.
b) The beaker is made of glass.
c) It gets darker over a long period of time.
d) The weighing boat contains 6.2 g of sodium bicarbonate.
b) The beaker is made of glass.
c) It gets darker over a long period of time.
A scientist hypothesizes that the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is
a) the gender of the alligator
b) the male alligator
c) the temperature
d) the incubator
c) the temperature
The analysis of data gathered during a particular experiment is necessary in order to
a) formulate a hypothesis for that experiment
b) develop a research plan for that experiment
c) design a control for that experiment
d) draw a valid conclusion for that experiment
d) draw a valid conclusion for that experiment
A piece of gold has a volume of 4 cm3 and a mass of 12 g. What is its density?
a) 300 g/cm3
b) 30 g/cm3
c) 3 g/cm3
d) 0.3 g/cm3
c) 3 g/cm3