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7th grade Review 201
7th grade final exam terms
| Question | Answer |
|---|---|
| Observation | information gathered by any of your five senses |
| Inference | a logical conclusions based on observations or prior experience |
| hypothesis | a logical prediction about the outcome of an experiment |
| photosynthesis | how plants make their own food- take in Carbon Dioxide and release Oxygen |
| Adaptation | the changes in an animals body over time (millions of years) that help it to survive and reproduce in its environment |
| Insect | an organism with 6 legs, 3 body parts and an exoskeleton |
| Pollination | the process of a flower's pollen being transported to another flower to make a fruit |
| pollen | male sperm cell of a flower |
| ovule | female reproductive cell of a flower |
| anther | male part of a flower with pollen |
| stigma | female part of the flower that pollen must land on for pollination |
| ovary | the female part of a flower that grows the seed once the egg is fertilized with pollen |
| Cotyledon | the part of a seed that provides energy to the very early plant before it reaches the sun to make its own food |
| seed coat | the outer layer of a seed that protects it |
| Cell wall | a part of a plant cell (NOT animal cell) that gives the cell a rectangular shape and helps prevent it form drying out |
| mammal | an organism that produces milk for its babies, has hair and is warm-blooded |
| amphibian | an organism that is cold-blooded and lives in both land and water |
| reptile | an organism that has scales and is cold-blooded |
| Igneous rock | a rock that is made from cooled magma or lava |
| Extrusive | an igneous rock that is formed on the surface of the earth from cooled lava |
| intrusive | an igneous rock that is formed under the earth from cooled magma |
| magma | molten (melted) rock under the Earth's surface |
| lava | molten (melted rock) on the Earth;s surface |
| Metamorphic rock | a rock formed by heat and pressure |
| Sedimentary rock | a rock made from sediments that are compacted and cemented together |
| sediments | pieces of shell, dirt and sand |
| rock cycle | the cycle that shows how rocks change from one type to another |
| weathering | the process of breaking down rocks into smaller pieces |
| physical weathering | the process of breaking down rocks by force (not chemicals); such as frost wedging |
| chemical weathering | the process of breaking down rocks by chemicals; such as acid rain |
| fossils | teh preserved remains of dead organisms that are buried in layers of sediments; over time these layers of sediments turn into sedimentary rock and create the fossil |
| Erosion | the process of broken down rocks and sediments getting transported away; agents of erosion include water, ice, wind and gravity |
| seasons | caused by the tilt of Earth's axis towards the North Star AND Earth's revolution around the sun |
| day and night | caused by the rotation of the Earth on it's axis |
| rotation | Earth's spinning on it's axis |
| revolution | Earth's circular orbit around the sun |
| orbit | another word for revolution |
| lunar eclipse | when the moon's orbit takes it behind the Earth so that the Earth blocks sunlight from reaching the moon |
| solar eclipse | when the moon's orbit takes it in front of the Earth so that the moon casts a shadow on the Earth as it blocks the sunlight from reaching the Earth |
| solar system | all the planets, stars and galaxies in an area |
| living | something that has all 8 characteristics of life, including made of cells, reproduces, breaths, needs food & water |
| non-living | something that has never been alive and never will be; like a table |
| dormant | something that doesn't show signs of life until it is in the right environment; like a seed placed in water |
| tectonic plate | the HUGE masses of land that cover Earth's crust; they are moving VERY slowly every year |
| divergence (or divergent plate boundary) | when 2 tectonic plates move away form each other; creating ocean trenches and sea floor spreading |
| convergence (or convergent plate boundary) | when 2 tectonic plates move towards each other; creating mountains and volcanoes |
| transform (or transform plate boundary) | when 2 tectonic plates slide past each other, creating earthquakes |
| continental drift | the theory that all the continents used to be connected together and that over time they have drifted (spread) apart to how they look now |
| exoskeleton | the hard outer covering or an insect |
Created by:
tbasci
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