1st Semester questions in 7th grade science to study for MId-terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Name 2 methods scientist use to obtain empirical evidence | In the field and in the lab
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| What basic requirements must a hypothesis have? | -Testable by experiment or observations
-Independant and Dependant Varibles
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| List the steps to the scientific method | -Defining a problem
-Research
-Hypothesis and Prediction
-Planning investigation
-Identifying Variables
-Collecting/Organizing Data
-Interpreting Data/Analyzing Information
-Drawing/Defending Conclusions
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| How many steps are in the scientific method? | 6 Basic Steps
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| What is the Independent variable? | What the scientist changes in the experiment
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| What is the dependant variable? | The reactions to the scientist change in a experiment
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| What is a wave? | A disturbance that transfers energy from one place to another
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| What is a longitudinal wave? | A wave when particles move back and forth in the same direction as the wave or parallel to the wave
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| What is a transverse wave? | a wave where particles move perpendicularly to the direction the wave travels
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| What wave requires a medium in which to travel? | A mechanical wave
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| What are the different forms of energy?(MRS.CHEN) | Mechanical, Radiant, Sound, Chemical, Heat, Electric, Nuclear
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| What does the law of conservation of energy state? | Energy cannot be created or destroyed
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| What is conduction? | Transfer of energy from one substance to another through direct contact
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| What is convection? | Transfer of energy through a liquid or gas
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| What is radiation? | Transfer of energy through electromagnetic waves?
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| List the levels of organization from largest to smallest | Ecosystem, Community, Population, Individual
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| What is a community? | A group of many species
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| What is a population? | A group of one species
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| What is an organism's habitat? | Its shelter or where it lives
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| What is an organism's niche? | Its role in a ecosystem
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| How are organisms connected to their nonliving environment? | Organisms use abiotic elements in their ecosystem for water, habitat, and nutrients
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| What do all food chains start with? | Producers
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| Herbivores, carnivores, and omnivores are all types of what? | Consumers
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| What is the decomposers role in a environment? | The breaking down of dead organisms
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