WorksheetsScience Exam 3rd grade
Total questions: 22
Worksheet time: 6hrs 30mins
An ecosystem is
A group of plants
The weather in a certain place
A community of living things that interact with each other and with the physical world
The sun and the rain
A rock is an example of a living thing
True
False
Give 5 examples of living things
Give 3 examples of Non living things
The ecosystems are classified into
Terrestrial and Aquatic ecosystems
Soil ecosystems and air ecosystems
Living ecosystems and Non living ecosystems
Light, minerals, and water
What of the following ecosystems is NOT a terrestrial ecosystem?
Tundra ecosystem
Marine ecosystem
Forest ecosystem
Grassland ecosystem
Desert ecosystems are
Places with several trees and animals
Regions covered with snow for most of the year
Regions where the vegetation is dominated by grasses and herbs
Regions with very little rainfall
The Cocora Valley is an example of a
Desert ecosystem
Tundra ecosystem
Forest ecosystem
Marine ecosystem
Aquatic ecosystems are ecosystems present in a body of water
True
False
The marine ecosystem includes seas and oceans
True
False
This ecosystem corresponds to
Grassland ecosystem
Desert ecosystem
Forest ecosystem
Tundra ecosystem
This ecosystem corresponds to
Tundra ecosystem
Fresh water ecosystem
Forest ecosystem
Grassland ecosystem
Complete the blank:
A producer is a living thing that can make its own (a)
Some examples of producers are...
Vultures, worms, fungi, and beetles are examples of
Decomposers
Consumers
Producers
Cows, bears, lions and human beings are examples of
Producers
Decomposers
Consumers
This picture represents a (a)
A population is a group of living things that live in the same place at the same time.
True
False
This process involves exchanging two gases—oxygen and carbon dioxide.
Respiration
Circulation
Nutrition
Adaptation
There are two types of respiration: __________ and __________
(a)
This system is in charge of transporting the blood and nutrients in our body.
Respiratory system
Circulatory system
The white blood cells are in charge of transporting oxygen to our cells.
True
False
