Forces and Motion - Middle School Physical Science

The answer is "up and down" because the forces in the upwards and downwards directions are equal and opposite.

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. The normal force pushes back up against objects in the opposite direction of gravity and keeps things from getting crushed. These are balanced forces.

The answer is "left and right." These forces are not balanced because while they are going in opposite directions, they are not equal.

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. The normal force pushes back up against objects in the opposite direction of gravity and keeps things from getting crushed. These are balanced forces.

The answer is "gravity."

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."

The answer is "The normal force."

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."

The answer is "This object is moving right, because the left and right forces are unbalanced." The reason the object is moving right is because the stronger force of 2,356 N is acting in that direction.

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."

The answer is "equal and opposite."

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."

The answer is "all of these."

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."

The answer is "all of these."

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."

The answer is "the image on the right" because the two men are pushing in equal and opposite directions.

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."

The answer is "the image on the left and possibly the image on the right, but it depends on how hard each of the men are pushing." The image on the left shows unbalanced forces pushing in the leftward direction. The image on the right could be showing unbalanced forces if one of the men is pushing with a stronger force.

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."

The answer is "They repel."

Magnetism is the force by which objects are attracted to or repelled by other objects. Magnets have two opposite ends, called poles. The north pole of one magnet will repel, or push away, the north pole of another magnet. The same thing will happen with two south poles. North and south poles of magnets are attracted to each other.

Magnetism involves electrons and electricity. Most iron is not permanently magnetic, but it can be made into a temporary magnet. The reason this is possible has to do with the electrons that make up the iron atoms. When the electrons are lined up just right, the piece of iron becomes a temporary magnet.

We call permanent iron magnets “Ferromagnetic,” but electricity is often used to make a type of magnet, called an electromagnet. Electromagnets are made from copper wire coiled around a core. Iron placed inside the core makes the magnet stronger. When an electric current is sent through the coiled wire, the wire becomes magnetized. When the current stops, the magnetism stops too.

The answer is "a copper wire, a nail, and a battery." The battery provides electricity which travels through the copper wire, and changes the alignment of the electrons in the iron nail, making it magnetic.

Magnetism is the force by which objects are attracted to or repelled by other objects. Magnets have two opposite ends, called poles. The north pole of one magnet will repel, or push away, the north pole of another magnet. The same thing will happen with two south poles. North and south poles of magnets are attracted to each other.

Magnetism involves electrons and electricity. Most iron is not permanently magnetic, but it can be made into a temporary magnet. The reason this is possible has to do with the electrons that make up the iron atoms. When the electrons are lined up just right, the piece of iron becomes a temporary magnet.

We call permanent iron magnets “Ferromagnetic,” but electricity is often used to make a type of magnet, called an electromagnet. Electromagnets are made from copper wire coiled around a core. Iron placed inside the core makes the magnet stronger. When an electric current is sent through the coiled wire, the wire becomes magnetized. When the current stops, the magnetism stops too.

We call permanent iron magnets “Ferromagnetic,” but electricity is often used to make a type of magnet, called an electromagnet. Electromagnets are made from copper wire coiled around a core. Iron placed inside the core makes the magnet stronger. When an electric current is sent through the coiled wire, the wire becomes magnetized. When the current stops, the magnetism stops too.

The answer is decreases. Magnetism is more powerful when objects are closer together.

Magnetism is the force by which objects are attracted to or repelled by other objects. Magnets have two opposite ends, called poles. The north pole of one magnet will repel, or push away, the north pole of another magnet. The same thing will happen with two south poles. North and south poles of magnets are attracted to each other.

Magnetism involves electrons and electricity. Most iron is not permanently magnetic, but it can be made into a temporary magnet. The reason this is possible has to do with the electrons that make up the iron atoms. When the electrons are lined up just right, the piece of iron becomes a temporary magnet.

We call permanent iron magnets “Ferromagnetic,” but electricity is often used to make a type of magnet, called an electromagnet. Electromagnets are made from copper wire coiled around a core. Iron placed inside the core makes the magnet stronger. When an electric current is sent through the coiled wire, the wire becomes magnetized. When the current stops, the magnetism stops too.

The answer is all of these. Iron, nickel, and cobalt are the three types of magnetic metals.

Magnetism is the force by which objects are attracted to or repelled by other objects. Magnets have two opposite ends, called poles. The north pole of one magnet will repel, or push away, the north pole of another magnet. The same thing will happen with two south poles. North and south poles of magnets are attracted to each other.

Magnetism involves electrons and electricity. Most iron is not permanently magnetic, but it can be made into a temporary magnet. The reason this is possible has to do with the electrons that make up the iron atoms. When the electrons are lined up just right, the piece of iron becomes a temporary magnet.

We call permanent iron magnets “Ferromagnetic,” but electricity is often used to make a type of magnet, called an electromagnet. Electromagnets are made from copper wire coiled around a core. Iron placed inside the core makes the magnet stronger. When an electric current is sent through the coiled wire, the wire becomes magnetized. When the current stops, the magnetism stops too.

The answer is "all of these affect the strength of a magnet" The proximity to the object, the size of the object, the material of the object it is sticking to, and the temperature of the object all affect magnetic pull.

Magnetism is the force by which objects are attracted to or repelled by other objects. Magnets have two opposite ends, called poles. The north pole of one magnet will repel, or push away, the north pole of another magnet. The same thing will happen with two south poles. North and south poles of magnets are attracted to each other.

Magnetism involves electrons and electricity. Most iron is not permanently magnetic, but it can be made into a temporary magnet. The reason this is possible has to do with the electrons that make up the iron atoms. When the electrons are lined up just right, the piece of iron becomes a temporary magnet.

We call permanent iron magnets “Ferromagnetic,” but electricity is often used to make a type of magnet, called an electromagnet. Electromagnets are made from copper wire coiled around a core. Iron placed inside the core makes the magnet stronger. When an electric current is sent through the coiled wire, the wire becomes magnetized. When the current stops, the magnetism stops too.

The answer is, the one with more loops. Having more loops around the core will increase a magnet's strength.

Magnetism is the force by which objects are attracted to or repelled by other objects. Magnets have two opposite ends, called poles. The north pole of one magnet will repel, or push away, the north pole of another magnet. The same thing will happen with two south poles. North and south poles of magnets are attracted to each other.

Magnetism involves electrons and electricity. Most iron is not permanently magnetic, but it can be made into a temporary magnet. The reason this is possible has to do with the electrons that make up the iron atoms. When the electrons are lined up just right, the piece of iron becomes a temporary magnet.

We call permanent iron magnets “Ferromagnetic,” but electricity is often used to make a type of magnet, called an electromagnet. Electromagnets are made from copper wire coiled around a core. Iron placed inside the core makes the magnet stronger. When an electric current is sent through the coiled wire, the wire becomes magnetized. When the current stops, the magnetism stops too.

The answer is both of these.

Magnetism is the force by which objects are attracted to or repelled by other objects. Magnets have two opposite ends, called poles. The north pole of one magnet will repel, or push away, the north pole of another magnet. The same thing will happen with two south poles. North and south poles of magnets are attracted to each other.

Magnetism involves electrons and electricity. Most iron is not permanently magnetic, but it can be made into a temporary magnet. The reason this is possible has to do with the electrons that make up the iron atoms. When the electrons are lined up just right, the piece of iron becomes a temporary magnet.

We call permanent iron magnets “Ferromagnetic,” but electricity is often used to make a type of magnet, called an electromagnet. Electromagnets are made from copper wire coiled around a core. Iron placed inside the core makes the magnet stronger. When an electric current is sent through the coiled wire, the wire becomes magnetized. When the current stops, the magnetism stops too.

The answer is "the magnetic field." The magnetic field shows us the influence of electrical charges around magnets.

Magnetism is the force by which objects are attracted to or repelled by other objects. Magnets have two opposite ends, called poles. The north pole of one magnet will repel, or push away, the north pole of another magnet. The same thing will happen with two south poles. North and south poles of magnets are attracted to each other.

Magnetism involves electrons and electricity. Most iron is not permanently magnetic, but it can be made into a temporary magnet. The reason this is possible has to do with the electrons that make up the iron atoms. When the electrons are lined up just right, the piece of iron becomes a temporary magnet.

We call permanent iron magnets “Ferromagnetic,” but electricity is often used to make a type of magnet, called an electromagnet. Electromagnets are made from copper wire coiled around a core. Iron placed inside the core makes the magnet stronger. When an electric current is sent through the coiled wire, the wire becomes magnetized. When the current stops, the magnetism stops too.

The answer is "the core is made of iron" because the image shows an electromagnet. Electromagnets need an iron core, magnets, and a copper wire to function.