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Science study guide
Terms in this set (88)
How do machines make our lives easier?
It changes an objects distance,direction,position,and strength.It makes moving and building easier.
A realationship between two kinds of organisms that benefits both.
A characteristic that helps an organism survive in its environments.
An adaptation in which an animal protects itself against predators by blending in with the environment.
All the living and nonliving things in an environment including their interactions with each other.
The passing down of the inherited traits from one generation to the other.
Both eat plants and animals.
Animals that eat other animals
Organisms without back bones.
Animals with backbones
The food making process in green plants that use sunlight.
A green chemical in plant cells that allows plants to use the Suns energy to make food.
Smallest unit of living matter.
Any living thing that can carry out its life on its own.
The process of changing directly from a solid into a gas without first becoming a liquid.
A mixture of substances that are blended so completely that the mixture looks the same everywhere.
A substance that dissolves one of more other substances to form a solution.
A substance that is dissolved by another substance to form a solution.
The ability to be bent ,flattened,hammered,or pressed without breaking.
Measurement of weight.
Measure of how gravity pulls an object.
Something that lifts things up.
A bar that rotates around the pivot point.
Split things apart.
The object being moved by the machine.
The force applied to a machine
A machine that changes direction,the distance,or the strength of a force.
The energy of a moving object.
Energy stored in the position or structure of an object.
The ability to perform work or change an object.
A force that opposes the motion of one object moving past another.
Any push or pull by one object or another.
A change in an objects position over time.
Anything has mass and takes up space.
A measure of the amount of matter in a n object.
Any of the patterns that are formed by a group of stars in the night.
A complete spin on its action.
The force of attraction between any two objects due to their mass.
Collection of billion of stars.
A natural object that orbits a planet.
A large object that orbits a star and does not produce its light.
A situation that occurs when earth,the sun ,and the moon are in a straight line and earth's shadow fall across the moon.
A blocking of the Suns light that happens when earth passes through the moons shadow.
One complete trip of one object around another.
The average weather pattern of a region.
One of earths largest ecosystems each with its own kind of climate,soil,plants,and animals.
The amount of the Suns energy that reaches earth.
The atmospheric layer of gasses that is closest to earth's surface.
The layers of gasses that surround earth.
The overlapping food chains in an ecosystem.
The path that nutrients follow in an ecosystem.
A species that has died out completely.
In danger of becoming endangered.
Species in danger of becoming extinct.
Maximum population size that an ecosystem can support.
An important role in an ecosystem.
How are mixtures formed and separated?
Formed by physical combination and separated by physical properties.
How does matter change energy?
It goes through changes of state.
What are the building blocks of matter?
How can you classify matter?
Element compound and pure substance.
How can properties of matter be measured?
By mass,kilograms,grams,or hand balance.
What are the characteristics of stars and how are they organized?
By shape,size,color,temperature,and by name.
What happens as the moon moves around the earth?
It becomes night and day,tides,and 8 phases of the moon.
What is in outer space?
Galaxies,sun,moon,stars,asteroids,comets,meteoroids,gas planets,and dwarf planets.
What factors in the atmosphere affect weather?
What are the layers of the earth's atmosphere?exosphere,thermosphere,mesosphere,stratosphere,and trophosphere.
How do adaptations help organisms survive?
By getting food and protecting themselves.
What happens as earth moves around the sun?
How do living and nonliving things interact in an ecosystem?
By having symbiosis.
How does energy flow between organisms and ecosystems?
It flows by the sun gives light to the producers and the producers produce the food and the consumers eat the food and eventually die and decompose into the ground.
How are living things similar and different?
They are similar because they both have cell structures and need food and water.They are different by they have different adaptations and by some are vertebrates and invertebrates.
How are animals grouped?
As vertebrates and invertebrates.
What are the structures of plant and animal cells?
Animal cells are nucleus,cytoplasm,vacuoles,cell membrane,and mitochondria.Plant cells are mitochondria,vacuole,nucleus,cytoplasm,Cloroplast,cell wall,cell membrane.
What are the characteristics of living things?
What is the scientific method?
make observations,ask a question,form a hypothesis,test hypothesis,analyze data,and draw conclusions.
what is a scientist?
A person who studies the physical natural world.
What is science?
The physical study of the real world.
How do humans and natural events change ecosystems?
They change by people are killing plants and animals and our ecosystems.
How do animals grow,develop,and reproduce?
How are ecosystems different?
The biomes that they are in.
How do organisms acquire their traits?
By genes that contain the chemical instructions from inherited traits.
How are work and energy related?
You can't do one without the other.
How do forces affect motion?
By causing an object to change in motion.
How do atoms combine to form compounds?
Plant and animal cells have several basic structures.
A green chemical in plant cells that use Suns energy to make food.
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