Vocab
The use of your 5 senses to investigate the natural world
Observation
The part of an experiment that I change, it is testable.
Independent Variable
How does the color of a room affect human behavior?
IV: colors of room
DV: human behavior
Control: number of humans in a room
_______ Models are smaller or larger representations of the thing being studied
Physical
Can the food we eat affect our heart rate?
IF we eat more surgery foods THEN our heart rates will beat faster BECAUSE sugar increases blood flow in the body.
a scientific procedure undertaken to make a discovery or to test a hypothesis
Experiment
A statement that searches for an answer. Is in the format “How does the IV affect the DV?”
Question
How does having worms in soil affect the speed at which plants grow?
IV: amount of worms in soil
DV: how fast/slow the plants grow
Control: type of soil
An example of this model is an equation such as E = mc2
Mathematical Models
Compare the bending strength and durability of different building materials.
IF we heat up iron, plastic, and vinyl, THEN plastic will bend the most BECAUSE it is the most flexible.
A statement about the future based on evidence
Prediction
The part of an experiment that is forced to change as a result of the independent variable and is measured.
Dependent Variable
What brands of bubble gum produce the biggest bubbles?
IV: type of bubble gum
DV: size of the bubble
Control: person that is blowing the bubbles and same measuring technique
An example of this model is a food web
Where are the most germs in your school?
The part of the experiment that stays the same throughout because if changed, it could affect the outcome of the experiment.
Control Variable
Using one or more of the senses to gather information that relies on descriptions.
Qualitative Data
Adding salt to boiling water increasing the temperature of the water.
IV: amount of salt
DV: temperature of the water
Control: type of salt used, time you add salt into the water
Benefits of models are...
1. Help us understand things we can't normally see
2. Help us understand phenomenon
3. Help us notice patterns
BONUS!! What food am I craving right now?
Tacossss
A possible explanation (answer) to a scientific question and investigation.
Hypothesis
Using one or more of the senses to gather information that relies on numbers or amounts.
Quantitative Data
Parrots are attracted to the color yellow.
IV: colors
DV: attraction of parrots
Control: type of parrots, amount of time they have access to the types of colors
A law can be expressed as a mathematical equation and tells us _________ happens, while a theory tells us __________ it happens.
WHAT, WHY
The rabbit population decreased in the winter due to the lack of food.
IF the rabbits have a lack of food THEN their populations will decrease BECAUSE it is cold in the winter months, reducing their food options.