Worksheets4th 6 weeks Test Food Chains, Energy Transformations
Total questions: 26
Worksheet time: 26mins
What kind of energy is stored in food?
thermal
mechanical
chemical
electrical
Energy stored in foods is _____________; digested food releases ___________ energy for movement and ________________ energy as heat.
mechanical, thermal, chemical
heat, mechanical, thermal
radiant, thermal, mechanical
chemical, mechanical, thermal
Plants get their energy from the Sun through photosynthesis. This energy is trapped in the bonds of the complex compounds the plants create from carbon dioxide and water. The plants are then eaten by animals, and the energy is used for heat and movement. Which of the following is an energy transfer that is conducted inside an animal in the above scenario?
chemical energy to radiant energy
chemical energy to mechanical energy
radiant energy to chemical energy
radiant energy to mechanical energy
Animals are consumers, meaning they need to eat food for energy because they cannot make their own. Which energy transformation is taking place when an animal eats food so it can keep warm?
Radiant to chemical
Chemical to thermal
Mechanical to radiant
Mechanical to thermal
Which of the following energy transformations occur when humans use energy from food to exercise?
Chemical → mechanical → thermal
Radiant → mechanical → thermal
Thermal → electrical → mechanical
Mechanical → thermal → chemical
A student prepares for a five-mile run so she eats a nutritious meal three hours before the run. Which correctly illustrates the transformation of energy from eating the meal to the five-mile run?
Chemical → Mechanical → Thermal
Mechanical → Thermal → Chemical
Thermal → Mechanical
Chemical → Thermal
A mountain biker is pedaling along a trail. What energy transformation is occurring during the ride?
Kinetic → potential
Electrical → chemical
Chemical → mechanical
Radiant → thermal
Use the desert food web to answer the following question:
How is this ecosystem MOST likely to be affected by a sudden decrease in the number of rats?
There will be a decrease in the number of cacti and sagebrush plants.
There will be an increase in the number of coyotes and hawks.
There will be a decrease in the number of snakes, coyotes, and hawks.
The snake population will increase.
Use the grassland food web answer the following question.
How is this ecosystem MOST likely to be affected by an increase in the number of prairie dogs?
The amount of grass will increase.
There will be more food for mice.
There will be more food for snakes.
The number of hawks will decrease.
Organisms that breakdown organic material are called
inorganic
producers
decomposers
consumers
The source of energy for this food chain is —
seeds
water
soil
sunlight
The food web below represents a prairie ecosystem. Students plan to draw an energy pyramid to represent the animals in this ecosystem.
How many levels should students draw in their energy pyramid?
6
5
4
2
A food web of an aquatic ecosystem is shown. Which of the following organisms are producers in this food web?
Squid
Seals
Penguins
Plankton
The food web below represents a desert ecosystem. Which organisms within this ecosystem contain the most energy?
Hawks and Coyotes
Snakes and Rats
Tarantulas and Snakes
Cacti and Sagebrush
Which organism in this food web is a producer?
6
5
4
1
The diagram below shows an ecosystem in East Texas.
The primary consumers in this ecosystem depend on which organisms for energy?
Louisiana milk snakes, Striped skunks
White-tailed deer, Beetles
Ants, White-footed mice, Field sparrows
Longleaf woodoats, Water oaks
Which of the following best describes a relationship in this ecosystem?
The buttercup, oak tree, and caterpillar are producers and provide energy to the lizard.
The owl is a secondary consumer because it receives its energy from either the rat or rabbit.
The lizard is a primary consumer because they eat grasshoppers and caterpillars
The snake is the top predator because it eats rats and lizards
Raspberries-> Rabbits-> Foxes
The food chain above can be found in a forest ecosystem. Suppose all of the raspberries were removed from the forest.
Which of the following is MOST LIKELY to happen in the forest after the raspberries were removed?
The foxes will increase, and the rabbits will decrease.
The foxes will decrease, and the rabbits will decrease.
The foxes will decrease, and the rabbits will increase.
The foxes will increase, and the rabbits will increase.
Phytoplankton consists mainly of single-celled algae. They live in aquatic ecosystems and provide energy to a variety of organisms.
Which trophic level would best describe phytoplankton?
producer
parasite
decomposer
consumer
Why is the bottom trophic level of an energy pyramid typically larger than the top trophic level?
An energy pyramid depicts an ecosystem's trophic levels.
There are more secondary consumers in an ecosystem than any other trophic level
Primary consumers have the greatest amount of energy in comparison to the other trophic levels.
Primary consumers have the greatest amount of energy in comparison to the other trophic levels.
Producers contain the greatest amount of energy in comparison to the other trophic levels.
A food chain is shown.
Which sentence best describes how energy flows through this food chain?
The prairie dog receives its energy from the coyote.
The energy from each organism is lost in the soil bacteria
The grass transforms radiant energy into chemical energy.
The soil bacteria transforms chemical energy into radiant energy
When organisms die, the organic matter in their cells and tissues can be consumed by mushrooms, bacteria, and worms for their energy.
What type of organisms are the mushroom, bacteria, and worms?
Herbivores
Producers
Decomposers
Primary Consumers
A student diagrammed a food web of algae, snails, ducks, frogs, and snakes that she observed during a summer trip to her grandparents' farm.
What is the correct arrangement of the above organisms on an energy pyramid?
When energy is passing through a food web, some of the energy is lost as heat. Approximately how much of the energy is passed from one level to the next?
90%
50%
10%
1%
The energy increases as you move from left to right
The direction of energy flow through organisms
The importance of organisms in the chain
The order of size of organisms in the ecosystem
he chart lists organisms in five different categories living near the Texas Gulf Coast.
Based on the chart, which food chain best models a flow of energy in this ecosystem?
un → Willow oaks → Algae → River otters
Sun → Pygmy sunfish → Shrimp → Wood ducks
Sun → Algae → Shrimp → Red drum
Sun → Mosquitoes → Shrimp → Coyotes
