Science Exam Flash Cards

Flashcards by celissamayan, updated more than 1 year ago
Created by celissamayan over 6 years ago


These are for my upcoming science exam, I don't think you need to see them.

Resource summary

Question Answer
What is science? Science is a systematic enterprise that builds and organises knowledge in the form of explanations about the universe.
Steps of the Scientific Method 1. Problem/Question 2. Observation/Research 3. Formulate a hypothesis 4. Experiment 5. Collect and analyse results 6. COnclusion 7. Communicate the results
Independent Variable a variable who's variation does not depend on another
Independent variable variable whos variation depends on other factors
Control Group Standard of comparison. "No treatment" group. Same conditions as the experimental group except for the variable being tested.
Constant All the factors that the experimenter attempts to keep the same.
Experiment Report Steps thing 1. Title 2. Hypothesis 3. Aim 4. Materials 5. Method 6. Conclusion 7. Discussion
Observation Recognising or noting a fact or occurence.
INference a conclusion based on observations
Endothermic Requires or absorbs heat (eg photosynthesis)
Exothermic Releases heat or the temperature of substance rises (eg bonfire).
MAtter Anything that has mass and takes up space.
Mixture Any substance that contains at least 2 different types of substances or particles.
Heterogenous mixture can visibly see the 2 particles and can be separated physically (mechanically)
Homogenous mixture cannot physically distinguish the two particles and can be separated chemically
Element Substance that cannot be separated into simpler substances by chemical reactions
Compound Chemical substance of two or more different chemically bonded (attached) elements.
Ways to separate mixtures - centrifugation - crystallization - chromotography -distillation - evaporation - filtration - sublimation - sedimentation - magnetic separation - sieving
SOLUTION mixture made up of one substance dissolved in another (the whole thing for example, coffee).
SOLUTE the dissolved substance (eg. coffee grounds in coffee)
SOLVENT the substance that the solute is dissolved in (eg. milk in coffee)
Dilute describes a solution with a small amount of dissolved substance per volume of liquid
Force A push, pull or twist. It can make things change shape, direction or speed.
Everyday examples of force 1. Moving bike stops when brakes are applied. 2. Pulling a door of a room 3. Kicking a football 4. Throwing a ball
Contact force when two materials/objects need to be touching for a force to have an effect (eg. friction, air resistance, buoyancy)
Non- contact force when two materials/objects DO NOT need to be touching for a force to have an effect (eg. magnetism, gravity, electrostatic)
Representing forces Arrows to represent force. Direction of arrow is direction of force. Length of arrow shows how big the force is.
Minimising friction Polishing, lubricants and streamlining.
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