science MSL review 7th grade
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| What is the force that works against motion? | friction
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| Which type of friction produces no heat? | static
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| What do you call any push or pull? | force
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| Velocity includes speed and______. | direction
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| Isaac Newton published the 3 laws of ________. | motion
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| What do all forces come in? | pairs
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| If the objects are not moving then they are ___________. | balanced
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| Which type of energy is stored? | potential
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| Which type of energy is doing work and is in motion? | kinetic
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| The forces that occurs when two substances rub together is ______ | friction
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| Which type of friction occurs when objects move through air or water? | fluid
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| What do you call the force of gravity on an object? | weight
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| A non motorized device that makes work easier. | simplemachine
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| The tendency for an object to be lazy or keep doing what it is doing. | inertia
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| All living things are made of.. | cells
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| The tendency for an animal to control its internal environment and remain stable. | homeostasis
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| The specialized parts of a cell. | organelle
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| The thick, gel, liquid which holds and protects the organelles. | cytoplasm
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| The organelle that is the control center of the cell. | nucleus
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| The organelle that makes the energy for the cell. | mitochondria
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| The cell wall is the stiff, hard structure that surrounds ______ cells. | plant
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| The organelle in plant cells that perform photosynthesis. | chloroplast
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| Single celled organisms usually found in water. | protist
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| What do you call a group of cells that do the same job? | tissue
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| What do you call a group of tissues doing the same job? | organ
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| Which human body system produces blood cells? | skeletal
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| A piece of tissue that connects a bone to a bone. | ligament
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| The slippery, flexible material found at the end of bones. | cartilage
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| The soft, spongy tissue found inside bones. | marrow
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| Muscles you have no control over such as digestion. | involuntary
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| The muscle type found only in the heart. | cardiac
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| The pigment that gives skin its color. | melanin
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| The muscular tube that takes food from the mouth to the stomach. | esophagus
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| The muscular organ where food is mixed with hydrochloric acid. | stomach
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| Fats that are usually a solid at room temperature and can raise cholesterol. | saturated
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| A waxy, fat-like substance that can lead to heart disease, and is only found in animals products. | cholesterol
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| The type of digestion where food is broken into smaller pieces or torn apart. | mechanical
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| After food leaves the pharynx where does it go? | esophagus
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| Which digestive organ produces bile to help break up fats? | liver
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| Which digestive organ produces insulin to help break down starches and carbohydrates? | pancreas
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| The vestigial organ attached to the large intestines. | appendix
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| The flap of tissue that closes over the windpipe to prevent food from going down. | epiglottis
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| The involuntary contractions that push food through the digestive system. | peristalsis
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| The muscular organ that pumps blood through the body. | heart
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| The blood vessel that carries blood away from the heart. | artery
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| The blood vessel that carries blood toward the heart. | vein
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| A flap of tissue that prevents blood from flowing backwards. | valve
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| The largest artery in the body. | aorta
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| The liquid part of blood. | plasma
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| The part of blood that helps it to clot. | platelet
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| The iron containing protein found in red blood cells. | hemoglobin
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| Tiny hairs lining the nasal passage that sweep out things we breathe in. | cilia
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| After air leaves the pharynx where does it go? | trachea
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| Tiny air sacs in the lungs used for gas exchange. | alveoli
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| The passageway for both food and air. | pharynx
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| The organs that filter waste products from the blood. | kidneys
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| The tube that carries urine from the kidney to the bladder. | ureter
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| The opening where urine leaves the body. | urethra
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| The type of reproduction that does not require fertilization. | asexual
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| What is the male gamete? | sperm
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| What is the female gamete? | egg
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| What do you call a fertilized egg? | zygote
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| What do you call a developing human from the 9th week until birth? | fetus
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| The time frame when an egg is released from an ovary. | ovulation
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| The process of physical change when a child's body matures into an adult body. | puberty
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| The type of twins made from two fertilized eggs. | fraternal
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| The type of twins made from one fertilized egg that splits. | identical
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| Which human body system protects us from foreign substances that may enter the body. | immune
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| The main function of this system is to transport nutrients and gases through the body. | circulatory
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| What are the basic building blocks of all organisms? | cells
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| The type of reproduction where offspring are genetically similar to parents. | sexual
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| The type of reproduction which involves only one parent. | asexual
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| Threadlike strands of DNA that carry genetic information. | chromosomes
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| The different versions of a gene. | allele
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| Alleles that are the same. They both are capital or lower case. | homozygous
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| Alleles that are different. One is capital, one is lower case. Also called hybrid. | heterozygous
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| The physical appearances or visible traits of an organism. | phenotype
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| A chart or family tree that tracks the members of a family. | pedigree
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| The genetic makeup or allele combination. | genotype
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| The natural movement of air in the form of a current. | wind
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| A violent, rotating wind that forms over land. | tornado
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| A storm with a violent wind that forms over the ocean. | hurricane
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| What is the main gas found in the atmosphere? | nitrogen
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| The curving global winds formed by the rotation of the Earth. | coriolis
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| The layer of the atmosphere where weather takes place. | troposphere
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| The layer of the atmosphere where "good" ozone is found. | stratosphere
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| The process of water moving from lakes back to the atmosphere. | evaporation
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| A quick moving ribbon of air that moves from west to eat high in the atmosphere. | jetstream
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| Which layer of the atmosphere is found closest to the Earths surface? | troposphere
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| Which step of the water cycle causes clouds to form? | condensation
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| What do you call the average weather over a long period of time? | climate
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| Which step of the water cycle returns fresh water to the Earth? | precipitation
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| Condensation is the change of a gas to a ______. | liquid
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| The study of the atmosphere at a given time and place. | weather
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| In which layer of the atmosphere are jet streams found? | troposphere
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| The process used by plants to release extra water into the atmosphere. | transpiration
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| What does a dry, cold air mass colliding with a moist, warm air mass create? | tornado
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| A natural electrical discharge that can form between clouds or the ground. | lightning
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| Low lying, flat clouds that look like fog. | stratus
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| Plants change ____ energy in to chemical energy. | solar
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| All animal and plant cells are surround by a thin... | cellmembrane
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| In which cell organelle does respiration take place? | mitochondria
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| Where does digestion begin? | mouth
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| Sexual reproduction provides more.... | diversity
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| What are cilia, flagella and pseudopods used for in protists? | moving
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| Which human body system is responsible for removing waste products from the body? | excretory
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| What kind of energy does a stretched rubber band have? | potential
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| When energy changes from one form to another, some of the energy is always lost through ______. | heat
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| The process of cell division used in asexual reproduction. | mitosis
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| The layer of the atmosphere that burns up meteors and shooting stars. | mesosphere
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| The combination of potential and kinetic energy. | mechanical
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| The type of cell division used with SEXUAL reproduction. | meiosis
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| The layer of the atmosphere where meteors burn up. | mesosphere
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| The layer of the atmosphere that contains good ozone. | stratosphere
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| The layer of the atmosphere where aurora's are found. | thermosphere
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| The layer of the atmosphere that is also called space. | exosphere
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| The female gamete. | egg
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| The male gamete. | sperm
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| Each human cell has 46 of these.... | chromosomes
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