Energy is Everywhere
What do you call a substance made of only one type of atom?
What is an element?
In which state of matter are particles packed tightly together and vibrate in place?
What is a solid?
What invisible force pulls objects toward Earth and keeps the planets in orbit?
What is gravity (gravitational field)?
What is one MAJOR difference between electromagnetic and mechanical waves?
What is electromagnetic waves can travel through space (a vacuum), but mechanical waves need a medium?
What kind of energy does an object have due to its motion?
What is kinetic energy?
What is the main difference between a homogeneous mixture and a heterogeneous mixture?
What is a homogeneous mixture looks the same throughout, while a heterogeneous mixture has visible parts?
What happens to the motion of particles when thermal energy is added to a substance?
What is the particles move faster and spread apart?
When you rub a balloon on your hair and it sticks to a wall, what type of charging is this?
What is charging by friction?
What part of a transverse wave is the highest point, and what is the lowest?
What is the crest (highest) and the trough (lowest)?
What does the law of conservation of energy state about energy in a closed system?
What is energy cannot be created or destroyed, only transformed?
A student heats a substance until it melts, then boils. Are these physical or chemical properties, and why?
What are physical properties, because the identity of the substance does not change?
During a chemical reaction, what happens to the total amount of matter?
What is it stays the same (it is conserved)?
What evidence proves that magnetic or electric fields exist even when objects aren’t touching?
What is objects moving or attracting/repelling without physical contact?
Which type of electromagnetic wave has the most energy, and how do you know?
What is gamma rays, because they have the highest frequency and shortest wavelength?
Two runners are moving at the same speed, but one has more mass. Which one has more kinetic energy, and why?
What is the runner with more mass, because kinetic energy increases with mass?
After mixing two liquids, a student observes bubbling and a temperature change. What type of change occurred, and how do you know?
What is a chemical change, because a gas formed and energy was released or absorbed?
A campfire transforms chemical energy into which two types of energy?
What is light energy and thermal (heat) energy?
A student uses different numbers of wire turns around a nail to create an electromagnet. What happens to the magnetic force as wire turns increase, and why?
What is the magnetic force increases because more coils strengthen the magnetic field?
A student shines a flashlight through water and notices the light bends. What wave behavior is being demonstrated, and what causes it?
What is refraction, caused by the change in speed of light as it moves from air to water?
On a distance-time graph, what does a steep, upward-sloping line tell you about an object's motion?
What is the object is moving fast (at a high speed)?
What subatomic particles make up an atom and what are their charges?
What are protons, neutrons and electrons, protons are positive, neutrons are neutral and electrons are negative.
You place a metal spoon in a pot of hot soup and it quickly becomes hot. What method of heat transfer is this, and what causes it on the particle level?
What is conduction, caused by the collision of fast-moving atoms transferring energy to slower ones?
In an investigation, a student tries to light a bulb using different materials between the wire and the battery. The bulb only lights with some materials. What is the student testing, and what is the difference between the materials?
What is the difference between conductors and insulators—conductors allow electricity to flow, insulators do not?
How do convex and concave lenses affect the way light is focused, and where might each be used?
What is convex lenses converge light to a point (used in magnifying glasses), and concave lenses spread light out (used in glasses for nearsightedness)?
A roller coaster climbs to its highest point and then begins to fall. Explain the energy transformation that occurs.
What is potential energy transforms into kinetic energy as it falls.