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WorksheetsSemester Exam Review Science
Total questions: 20
Worksheet time: 10mins
What is the charge of an electron?
Postive
Negative
Nucleus
Neutron
True or False? Liquid water is heated until it evaporates. Is it going to be a physical change?
True
False
What is the composition of the molecule of propane below if the black spheres represent carbon and the white ones represent hydrogen?
CO2
C6H12O6
C3H8
O2
What does the model below represent?
An atom and a molecule
A compound only
A molecule only
A molecule and compound
True or False? Is Protons is not positive
True
False
Tin and hydrochloric acid are placed in a test tube. Bubbles form around the metal. What is a change?
Liquid
Physical
Chemical
Solid
What is exothermic means?
I don't know
It absorbed heat energy
It release heat energy
True or False? Is endothermic can absorbed heat energy
False
True
Which direction does the energy provided by photosynthesis move to provide for cellular respiration in all of the tree’s cells?
The water moves down from the leaves toward the roots.
The carbon dioxide moves down from the leaves toward the roots.
The oxygen moves down from the leaves toward the roots.
The glucose moves down from the leaves toward the roots.
Which of the following is a secondary consumer?
Rabbit
Frog
Trees
Shark
Which organism in an ecosystem supplies minerals and nutrients to the producers?
Consumer
Ecosystem
Decomposer
Producer
Which of the following is a reactant for cellular respiration?
Glucose
Water
Energy
Carbon Dioxide
Through which part of a plant do the gasses enter the plant? What it be in leaves?
Node
Stomata
Stem
Pollen
True or False? What happens to an ecosystem when a population becomes overpopulated? Organisms that rely on the same resources as the overpopulated organism will INCREASE.
True
False
What is an example of picture below?
Mutualism
Competition
Commensalism
Parasitism
True or False? Which type of relationship do the two species below share in their ecosystem? Is it Animals and Prey
False
True
How would an organism that has very few predators affect an ecosystem if it were to die out?
The ecosystem would reach equilibrium
The whole ecosystem would die out.
The producers would die out.
The herbivores would overpopulate.
If sheep survived mainly on grass and there was a fire that eliminated their food source, what would happen to the sheep? What happen if the sheep population
Stay the same
Decrease
Increase
Which of the following would be a limiting factor for the producers in the ecosystem pictured below?
Water
Sunlight
Soil
Minerals
What is this picture below?
Producer
Scavenger
Predator
Producer
