Practice of Science
As more knowledge is discovered, science ________________.
advances
a force that pulls objects toward each other
gravitational force
A bowling ball rolling down the alley.
Kinetic
What two things does gravity depend on?
Mass and distance
Helen baked chocolate chip cookies that wound up looking like muffins. She asked Lane to use the same directions and see if her cookies also look like muffins.
Replication
Push or pull that changes the motion of an object.
Forces
A bowling ball sitting on the rack.
Potential
As distance increase, the gravity
decrease
In ________________________scientists look for patterns or trends by comparing similarities and differences over time and under various circumstances.
Comparative investigation
Nilsa’s science teacher asks her what type of force can be used to lift a paper clip off the table without touching it. Which of the following forces should Nilsa choose to answer the teacher’s question correctly?
Magnetic force
The chemical bonds in sugar
Potential
An environmental group contacts Nancy to get her experimental procedures so that they can check her results.
Replication
Use words like, Observe, describe, list, identify
Observative investigation
Shermain notices that when she rubs her hands together, they get warmer. Which force BEST explains what causes her hands to get warmer?
Frictional force
Generally used when little is known
Observational Investigation
A scientist does THEIR OWN experiment over 3 times to check their results.
Repetition
Used to determine cause and effect relationship
Experimental investigation
A magnet pulling a coin
Non Contact Force
Use words like, compare/contrast, similar/different, categorize
Comparative Investigation
Joshua goes to Silver River each week for 4 weeks and collects 5 samples of water to test the pH.
Repetition