4th grade science Unit 1
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4th grade science Unit 1
ASLS 4th grade science unit 1 flashcards
When an organism is no longer alive on earth.
The smallest unit that makes up all living things.
The living and nonliving things in an environment, and all their interactions.
The set of steps in which organisms get the food they need to survive.
Any evidence of an organism that lived in the past.
A organism's home.
The largest group into which an organism is classified.
A group of tissues that work together to do a certain job.
Harmful substances added to Earth's water, air, and land.
The smallest group into which an organism is classified.
A group of similar cells that work together to carry out a job.
A group of organs that work together to carry out life functions.
Any of the one-celled organisms that live in water. They look like a blob with a dot in the middle.
What is one thing looking at fossils can help you know?
How loving things have changed over time.
What part of a cell is missing from all bacteria?
Scientists classify organisms into 6 groups: ancient bacteria, true bacteria, protist, fungus, plant, and animal - these are called.....
Many fossils are skeletons preserved in this...
The oldest fossils are in the oldest rock layers found in this layer of rock...
The youngest fossils are int he youngest rock layers found in this layer of rock...
The top layer
A period when many different species died out.
What do we call the living part of an ecosystem?
What do we call a part of a community made up of one type of organisms.
What is an organisms home called?
What do we call the organisms that break living and dead matter into simple chemicals?
What do we call the steps by which organisms get the food they need to survive?
What do we call acids in smoke from factory smokestacks mixed with water in the air that falls to Earth?
If a drought changes an ecosystem into a desert what will happen to the plants?
Only those that can live with little water will survive.
A consumer is something that uses the food produced by a producer. Name 3 consumers...
beetle, bird, person....
What can you find in a plant cell that you won't find in animal cells?
Name another animal that would fit into this animal group: tiger, cheetah, lion, cougar...
Name 5 basic life functions that all living things carry out.
1. They all grow and develop.
2. They all use energy.
3. They all reproduce.
4. They all respond to the environment.
5. They all get rid of wastes.
Name a producer....
tree, flower, grass...
Name a decomposer...
fungi, bacteria, mold...
Name a few things plant cells have that animal cells do not.
chlorophyll, cell wall, and chloroplast
All living things need these 4 things...
water, oxygen, food, and shelter
Name the three basic differences in plant and animal cells.
covering, color, and shape
The characteristics of a living thing that organisms in each kingdom share.
Organisms are scientifically named by naming these two things in the correct order.
genus and species (in that order)
Name four things that can change an ecosystem.
overpopulation, diseases, drought, and pollution.