S8P1:Matter and its properties
S8P2: Energy Transformations
S8P3: Force and Motion
S8P4: Waves and their Applications
S8P5: Electricity and Magnetism
100
What is a homogenous mixture
A mixture that is uniform (the same) throughout.
100
What is potential energy?
Energy that is stored
100
What does a flat line on a distance-time graph indicate?
No motion
100
Which wave requires a medium?
Mechanical Waves
100
What is the difference between a conductor and insulator?
An insulator doesn't easily allow the flow of electricity or heat. A conductor easily allows the flow of electricity or heat.
200
Which state of matter has particles tightly packed?
A solid
200
What two factors affect kinetic energy?
Speed and Mass
200
Describe/Explain Newton's 1st Law of Motion.
An object at rest will stay at rest or an object in motion will stay in motion unless a force is applied to it.
200
What type of wave is a sound wave?
Mechanical
200
Is an electromagnet a permanent magnet or temporary magnet?
Temporary magnet
300
What is a chemical change?
A change that results in a new substance being created.
300
What kind of energy is in a stretched rubber band?
Potential (stored) energy
300
What type of force will cause an object to stop moving? (balanced or unbalanced)
Balanced
300
Which electromagnetic wave is used in medical imaging?
X-ray waves
300
Charging objects through rubbing is ....
Friction
400
Scenario: A student mixes sugar into hot tea and observes that it dissolves completely, forming a clear liquid.
Question: Based on this observation, what type of mixture is formed, and why?
A homogeneous mixture, because the substances are evenly mixed and cannot be easily separated.
400
A student touches a metal spoon that was sitting in a bowl of hot soup and notices it feels warm.
Question: Which type of heat transfer occurred, and how do you know?
Conduction, because heat moved through direct contact between the soup and the metal spoon.
400
Two people push a heavy box from opposite sides with equal force, and the box doesn’t move.
Question: What kind of forces are acting on the box, and what is the result of these forces?
Balanced forces; they cancel out, so there is no motion.
400
A flashlight beam hits a mirror, and the light bounces back.
Question: What wave behavior is demonstrated, and what is this process called?
Reflection; light is bouncing off the surface.
400
Scenario: A student builds an electromagnet using a nail, wire, and a battery. She wraps the wire more times around the nail and adds another battery.
Question: What will happen to the strength of the electromagnet, and why?
It will increase because more coils and more energy strengthen the magnetic field.
500
Scenario: In a closed system, a student mixes vinegar and baking soda and measures the total mass before and after the reaction.
Question: What should the student observe about the total mass, and what scientific law does this support?
The total mass remains the same; this supports the law of conservation of matter.
500
A roller coaster climbs a tall hill and then speeds down into a loop.
Question: Describe how energy is transformed during this motion.
Potential energy at the top is transformed into kinetic energy as the coaster speeds down.
500
A student pushes two toy cars with the same force. One car is heavier than the other.
Question: Which car will accelerate more and why?
The lighter car, because it has less mass and requires less force to accelerate (Newton’s 2nd Law).
500
Light travels through glass, water, air, and vacuum.
Question: List these materials from slowest to fastest in terms of light speed.
Glass → Water → Air → Vacuum
500
A group of students is testing different electromagnet setups to lift paperclips. They try three variations:
• Setup A: 10 wire coils, 1 battery
• Setup B: 20 wire coils, 1 battery
• Setup C: 20 wire coils, 2 batteries
They find that Setup C lifts the most paperclips, while Setup A lifts the fewest.
Question:
What two factors most likely caused Setup C to lift more paperclips than Setup A, and how did each factor contribute to the increase in magnetic strength?
Setup C has more coils and more batteries which both will result in an stronger electromagnet.