Lab Safety & Habits
Change or Measure?
Observe or Infer?
Levels of Organization
Habitats & Ecosystems
Producers & Consumers
100
You see a broken beaker or a spill in the lab. What should you do FIRST?
Tell the teacher immediately
100
In an experiment, the thing the scientist CHANGES on purpose is called the ____ variable.
Independent variable
100
Using your senses to get information is called this.
Observation
100
A single living thing, like one frog, is called this.
An organism (individual)
100
Living parts of an ecosystem are called ____ factors.
Biotic
100
An organism that makes its own food using sunlight, like grass or algae.
Producer
200
When are you allowed to eat or drink in the science lab?
Never
200
In an experiment, the thing the scientist MEASURES to see what happened is called the ____ variable.
Dependent variable
200
"The leaf is green." Observation or inference?
Observation
200
A group of the SAME species living in the same area.
Population
200
Non-living parts of an ecosystem, like sunlight and water, are called ____ factors.
Abiotic
200
An organism that gets energy by eating other organisms.
Consumer
300
You don't understand a step in the lab directions. What should you do?
Ask the teacher before going on
300
Maria gives plants different amounts of water to see how tall they grow. What does she CHANGE?
The amount of water (independent variable)
300
"The fish is hiding because it is scared." Observation or inference?
Inference
300
All the different populations living together in one area.
Community
300
The place where an organism lives and gets what it needs.
Habitat
300
An organism, like a mushroom or worm, that breaks down dead things and returns nutrients to the soil.
Decomposer
400
Which question is testable? A) Is chocolate better than vanilla? B) Does temperature change how many flowers a rose bush grows?
B: Does temperature change how many flowers a rose bush grows?
400
Brayden tests if eggs cook faster in saltwater or plain water. What does he MEASURE?
The time it takes the egg to cook (dependent variable)
400
"The pond water is 22 degrees Celsius." Is this a qualitative or quantitative observation?
Quantitative (it uses a number)
400
A community PLUS the non-living things around it, like water, soil, and sunlight.
Ecosystem
400

Is sunlight biotic or abiotic?

ABIOTIC

It is not alive: no cells, does not grow or reproduce


400

In the food chain grass → grasshopper → frog → snake, where does ALL the energy start?

The SUN!

500
A scientist's results don't match her hypothesis. What should she do next?
Evaluate the results, change the hypothesis if needed, and test again (never change or remove data)
500
A swim team tests 3 types of fabric to see which dries fastest. Each piece is the same size and gets the same water and sunlight. What do they CHANGE?
The type of fabric (independent variable)
500
"The fruit is bright red." Qualitative or quantitative?
Qualitative (describes with words, no numbers)
500
Put these in order, smallest to largest: ecosystem, organism, community, population.
Organism, population, community, ecosystem
500

A new species is brought into an ecosystem. What can happen?

It can disrupt the balance and outcompete native species (invasive species)

500

A rabbit eats only plants. A hawk eats only meat. A bear eats both. Name all three types.

Rabbit: herbivore. 

Hawk: carnivore. 

Bear: omnivore.

M
e
n
u