Newton's Laws
Which of Newton's Law states that objects stay at rest or in moiton stay at rest or in motion unless a force acts on them?
1st Law
Energy of motion is called ____.
Kinetic energy
What does a flat line on a distance–time graph mean?
Object is not moving
Heat always moves from ____ to ____.
Hot → Cold
What materials can magnets attract?
Iron, nickel, cobalt
What equation represents Newton’s 2nd Law?
F = m × a
When a ball rolls down a hill, what energy change occurs?
Potential → Kinetic
What does a steeper slope mean on a motion graph?
Faster speed
When metal touches something hot, what type of heat transfer is this?
Conduction
What happens when two north poles of magnets face each other?
They repel
When a skateboarder pushes backward on the ground and moves forward — which law?
3rd Law
What’s the difference between energy transfer and transformation?
Transfer = moves between objects; Transformation = changes form
On a graph, if line curves upward, what does that show?
Acceleration
What kind of heat transfer happens in boiling water?
Convection
What happens to magnetic force as distance increases?
It gets weaker
A 5 kg box is pushed with 20 N of force. What is its acceleration?
4 m/s²
In our pendulum lab, what two forms of energy were involved?
Potential & Kinetic
If a car travels 40 m in 4 s, what’s its speed?
10 m/s
What type of heat transfer happens from the Sun to Earth?
Radiation
How can you make a magnet stronger?
Move magnets closer or use multiple magnets together
Explain how all 3 of Newton’s Laws appear in the Ramp Car Lab.
1st – Car stayed still; 2nd – More mass = less accel; 3rd – Car pushed ramp ↔ ramp pushed car.
Give a real-life example showing both energy transfer and transformation.
Ex: pushing a ball (transfer) that heats slightly from friction (transformation)
Explain how a speed–time graph differs from a distance–time graph.
Speed–time shows acceleration; distance–time shows total motion.
Explain all 3 types of heat transfer using one example (campfire).
Conduction – stick → hand; Convection – air moves; Radiation – heat from fire.
Explain how magnetic fields and gravity are similar.
Both act at a distance and get weaker with distance.