Think Like a Scientist
What is a HYPOTHESIS?
A testable prediction about what you think will happen?
A push or pull.
What is a FORCE?
What is the NET FORCE when FORCES are BALANCED?
0N
What is the NET FORCE?
4 N → 📦 ← 4 N
0N
Draw a FORCE MODEL showing 5N RIGHT AND 5N LEFT.
Example: 5 N ← 📦 → 5 N
What is an OBSERVATION?
An observation is information gathered using your senses or tools.
The overall force acting on an object after the forces are combined.
What is NET FORCE?
Two students pull with 5 N in opposite directions. Balanced or unbalanced?
It is BALANCED.
What is the NET FORCE?
2 N ← 📦 → 7 N
5N Right
Draw a FORCE MODEL with a NET FORCE of 5N Right.
Example: 3 N ← 📦 → 8 N
What is a CONCLUSION?
A conclusion is an explanation of what the results show based on the evidence/data?
What unit is used to measure force?
What are NEWTONS (N).
A box has 7 N acting right and 3 N acting left. Balanced or unbalanced?
It is UNBALANCED.
What is the NET FORCE?
3 N →
5 N →
8N Right
Create a FORCE MODEL with a NET FORCE of 0N.
Example: 10 N → 📦 ← 10 N
What is the difference between a prediction and a result?
A prediction is what you think will happen; a result is what actually happened.
What does a FORCE ARROW show?
The direction of the force; its size/length can also represent magnitude.
UNBALANCED.
Two forces act in the opposite direction. Add or subtract?
Draw a FORCE MODEL with TWO FORCES acting RIGHT.
3 N →
5 N →
Why might scientists repeat an investigation?
Name 5 ways a force can change an object's motion.
A force can START, STOP, SPEED UP, SLOW DOWN, and/or CHANGE DIRECTION.
What happens to MOTION when an UNBALANCED NET FORCE acts on an object?
Motion changes (It Accelerates) when an unbalanced net force acts on an object.
A box has "12 N Right" acting on it. What force acting LEFT would make the forces BALANCED?
12N Left
Draw a FORCE MODEL of OPPOSITE FORCES with a NET FORCE of 5N Left.
← 6 N 📦 1 N →