WorksheetsFossils and Changes in Ecosystems Test
Total questions: 20
Worksheet time: 20mins
A long period of drought causes changes to an ecosystem. Streams and ponds can dry up during a drought. Some organisms do well during a drought while others die.
Which of these organisms will do well during a drought?
Mosquitoes
Frogs
Fish
Cactus
Which of these statements best describes how a flood forces some animals to move?
A flood provides more water and fills ponds for fish to live in
Mosquitoes lay their eggs in still water, and populations of mosquitoes thrive.
A flood destroys all grasses and shrubs in a grassland, and deer leave to find food.
Herons walk through the standing water from a flood and search for food.
Choose two statements that best describe how the natural changes have affected this ecosystem:
The plants and animals are thriving due to the recent rainfall.
A flood has wiped away all the living and non-living organisms.
There has been little to no rainfall causing a drought.
Only living things were affected by the natural changes.
Plants are struggling to survive and animals have been forced to a new place to find food and water.
This field and forest have been flooded in a big storm. Which organisms will likely thrive in the flood? Select two answers
Fish
Clover
Woodpeckers
Chipmunks
During a drought, which of these adaptations would most likely help an animal survive?
Long legs for running fast
Bright coloration to attract mates
Ability to store water
Thick fur to retain heat
How might a prolonged drought affect the food chain in a grassland ecosystem?
Stabilization of all populations
Increase in predator populations
Decrease in herbivore populations
Increase in plant diversity
Which of these factors is most likely to cause a change in animal migration patterns?
Introduction of a new predator
Increase in human population
Change in water availability
Decrease in sunlight hours
This type of fossil is tree sap hardened and replaced by minerals.
Petrified wood
Imprint
Amber
Mold
What needs to happen FIRST for a fossil to form?
A plant or animal must be covered by sediment.
A plant or animal must die and decompose.
Sediments fill a a mold to form a cast.
An earthquake shifts the land up.
Describes a group of living things that are no longer living.
fossil
extinct
endangered
dinosaur
Which is an imprint fossil?
bone
a cast
an animal track
amber fossil
Which animal part would form a fossil?
fur
lung
bone
muscle
Which of the following do fossils NOT help us better understand?
helps understand the future
teaches us about animals of the past
teaches us about plants of the past
teaches us how Earth has changed over time
Which of these is NOT a fossil?
How do fossils form?
When two rocks get rubbed together.
When body parts are found in the river.
When plants and animals are buried under mud, clay, or leaves.
When plants and animals are buried under mud, clay, or sand.
__________ is the preserved remains of animals, plants, or other organisms from the past.
Evidence
Sequence
Fossils
Organisms
What happens during a rainstorm when the ground can't soak up any more water?
What is this?
Wildfire
Flood
Drought
Global warming
What is this natural disaster?
Landslide
Windstorm
Tsunami
Flood
Scientists can use fossils to ________, or make a guess about something based on facts.
evidence
infer
fossil
extinct
