Atoms
This part of the atom contains positively charged particles and sits at the center of the atomic system.
What is the nucleus?
This change to an electromagnet—adding more coils of wire—causes its magnetic field strength to increase.
What is increasing the number of loops?
Two observers describe a skateboarder differently because one is standing still and the other is jogging beside the skateboard. This explains why motion depends on this factor.
What is the observer’s frame of reference?
The wave property that is related to the height of a wave.
What is amplitude?
This type of wave requires a medium, which is why it cannot travel through outer space.
What is a mechanical wave?
These negatively charged particles move around the nucleus and help keep the atom together through attraction.
What are electrons?
This factor causes electric and magnetic force fields to weaken as two interacting objects move farther apart.
What is increasing the distance?
A passenger on a bus says a ball rolls straight forward, while someone on the sidewalk says it curves. This difference is due to this concept.
What is relative motion?
This type of wave travels through earth.
What is a seismic wave?
This type of electromagnetic wave has the longest wavelength and is used for communication signals.
What are radio waves?
This process inside stars fuses small nuclei into larger ones, releasing huge amounts of energy that we see as starlight.
What is nuclear fusion?
This variable must be increased in a wire to strengthen the magnetic field around it, such as in an electromagnet or motor.
What is increasing the electric current?
This quantity must be calculated to predict how an object’s motion will change when multiple forces act on it.
What is the net force?
This behavior occurs when a wave bends as it enters a new medium, such as light bending in water.
What is refraction?
These waves have shorter wavelengths than visible light and can cause sunburn when absorbed by the skin.
What are ultraviolet waves?
This product is released when hydrogen nuclei combine inside stars that is detected from millions of miles away.
What is light?
This variable in an electromagnet can be decreased to weaken the magnetic field, making it lift fewer objects.
What is reducing the electric current?
In an investigation, students push two carts with the same force but observe different accelerations. This variable explains the difference.
What is mass?
This behavior occurs when a wave passes through a material without being absorbed or reflected.
What is transmission?
These waves have shorter wavelengths than visible light and can cause sunburn when absorbed by the skin.
What are ultraviolet waves?
The difference between the atom of an element and the atom of an isotope
What is the number of neutrons?
Changing this distance affect the strength of attraction or repulsion between two magnets?”
What is the distance between the magnets?
A rocket pushes gas downward, and the gas pushes the rocket upward with equal strength. This describes which scientific principle?
What is Newton’s Third Law?
This difference explains why sound cannot travel through space but light can.
What is the need for a medium in mechanical waves?
These electromagnetic waves have the highest frequency and carry the most energy, often produced by nuclear reactions in space.
What are gamma rays?