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WorksheetsLife Science
Total questions: 35
Worksheet time: 36mins
The quality of air is monitored by the government to determine whether a city needs to take steps to control air pollution. To best measure air quality, the air should be tested...
at night when the air is probably less polluted
several times a day in all kinds of weather
once a day during rush hour when the most cars are on the road.
once a year on a day with very little vehicle traffic.
For scientific data to be considered accurate and reliable, most scientific experiments should be...
conducted as many times as possible
conducted 3 times
conducted only 1 time
repeated no more than two times.
Based on the Beetle Classification Key, which beetle is shown in the picture?
Red Polar Beetle
Colorado Beetle
Ladybird Beetle
Timberman Beetle
An alligator is classified as an organism that has...
scales and no legs
scales and legs
feathers and swims
feathers and does not swim
The mass of a rock was taken on a triple beam balance and the measurement is shown. What is the mass of the rock.
436.0 g
437.0 g
436.8 g
430.6 g
A student did an experiment to see what natural pesticides were the most effective on crickets. The student had to measure volumes of liquid pesticides, record the mass of soil used in the containers, and test the acidity of soil after the pesticides were used. Which tools would have been appropriate for the student to use during the experiment?
graduated cylinder
probeware
metric ruler
triple beam balance
thermometer
A student is asked to make a model of a plant cell. The image shows the plant cell model with its parts labeled. Which parts re labeled correctly?
Cell wall
cell membrane
nucleus
mitochondrion
vacuole
Carbon dioxide is released when yeast ferments a sugar solution. A student wants to determine if the concentration of the sugar solution affects the amount of carbon dioxide released. He prepares sugar solutions in three beakers and adds equal amounts of yeast to them. He then measures the amount of carbon dioxide released by each solution using a CO2 sensor.
Which standard should be followed by the student for a valid experiment?
amount of yeast added to each beaker should be different
concentration of sugar in all the beakers should be different
temperatures of solutions in all the beakers should be different
volume of the solution in all the beakers should be the same
John and Emily were experimenting with the effects of road salt on plant growth. To do this, they watered plants daily with the same amount of salt water they could best improve their experiment by...
watering half the plants with pure water and half with salt water
adding food coloring to see how far the salt penetrates the plants
cooling the salt water before watering the plants.
increasing the amount of salt added to the water each day.
What type of animal does not have a backbone?
mammals
vertebrates
invertebrates
endoskeleton
Plants are organisms that can create their own food so they are
photosynthesis
chlorophyll
consumers
producers
What system transports water and other minerals through a plant?
geothermal
hydration
circulatory
vascular
What part of the plant has green coloring and absorbs energy from the sun?
chlorophyll
organelle
vacuole
vascular system
What is the scientific term for any living thing?
organelle
organism
chlorophyll
producer
What type of animal has a backbone?
exoskeleton
arthropods
invertebrates
vertebrates
Animals need to eat other organisms for energy, so they are called
photosynthesis
chlorophyll
consumers
producers
Why do organisms adapt?
To jump
To survive
To reproduce
To decompose
