Exploring Matter, Energy, and Motion in Physical Science
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Exploring Matter, Energy, and Motion in Physical Science
20 flashcards
Q1:What is matter?
A:Matter is anything that has mass and takes up space.
Q2:Name the three states of matter.
A:Solid, liquid, and gas.
Q3:What is kinetic energy?
A:Kinetic energy is the energy of an object in motion.
Q4:What is potential energy?
A:Potential energy is the stored energy of an object due to its position or condition.
Q5:What does the law of conservation of mass state?
A:The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.
Q6:How is speed different from velocity?
A:Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.
Q7:What is acceleration?
A:Acceleration is the rate at which an object changes its velocity.
Q8:Give an example of thermal energy.
A:Thermal energy is the energy that comes from the temperature of matter, such as the heat produced by burning wood.
Q9:What is the unit of energy commonly used in physical science?
A:The joule (J).
Q10:What is the difference between potential energy and kinetic energy?
A:Potential energy is stored energy based on an object's position, while kinetic energy is the energy of an object in motion.
Q11:What role does friction play in motion?
A:Friction is a force that opposes motion between two surfaces in contact, slowing down or stopping movement.
Q12:What is a chemical change?
A:A chemical change is a process that leads to the transformation of one set of chemical substances to another.
Q13:Define mechanical energy.
A:Mechanical energy is the sum of potential energy and kinetic energy present in an object.
Q14:What scientific principle explains why a ball thrown up eventually comes back down?
A:The principle of gravity pulls the ball back down to the ground.
Q15:What is an example of energy transformation?
A:A battery converting chemical energy into electrical energy when powering a device.
Q16:What is buoyancy?
A:Buoyancy is the ability of an object to float in a fluid due to the upward force exerted by the fluid.
Q17:How does temperature affect the state of matter?
A:Temperature changes can cause matter to change states, such as melting ice into water or boiling water into steam.
Q18:What is a force?
A:A force is an interaction that, when unopposed, will change the motion of an object.
Q19:Define inertia.
A:Inertia is the tendency of an object to resist changes in its state of motion.
Q20:What is energy efficiency?
A:Energy efficiency is a measure of how much useful work is obtained from the energy input.
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