MS-PS2-4: Gravitational Interactions

Front

Gravity Noun

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[grav-i-tee]

Back

Gravity

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A fundamental force of attraction that acts between all objects with mass, pulling them toward one another.

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Example: An apple falling from a tree shows gravity pulling objects toward the Earth.

Front

Mass Noun

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[mas]

Back

Mass

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The amount of matter in an object, which is a measure of its inertia and the strength of its gravitational pull.

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Example: A balance scale with a feather and a rock shows that the rock has more mass.

Front

Force Noun

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[fors]

Back

Force

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A push or a pull on an object that can cause it to change its velocity, meaning it accelerates.

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Example: A person pushing a box shows how force can move an object.

Front

Gravitational Force Noun

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[grav-i-tey-shuh-nl fors]

Back

Gravitational Force

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The specific force of attraction between two masses, which depends on the size of the masses and their distance apart.

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Example: The image shows gravitational force between Earth and the Moon, with arrows indicating attraction and a formula explaining the relationship.

Front

Electromagnetic Force Noun

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[ih-lek-troh-mag-net-ik fors]

Back

Electromagnetic Force

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A fundamental force of nature responsible for interactions between electrically charged particles, creating electric and magnetic fields.

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Example: A coil with current creates a magnetic field, showing electromagnetic force.

Front

Strong Nuclear Force Noun

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[strong noo-klee-er fors]

Back

Strong Nuclear Force

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The most powerful fundamental force, which binds protons and neutrons together to form the nucleus of an atom.

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Example: Protons and neutrons are held together in the nucleus by the strong nuclear force.

Front

Weak Nuclear Force Noun

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[week noo-klee-er fors]

Back

Weak Nuclear Force

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A fundamental force that is responsible for the radioactive decay of subatomic particles in an atom's nucleus.

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Example: The image shows beta decay, where a neutron turns into a proton, emitting an electron and an antineutrino.

Front

Balanced Forces Noun

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[bal-uhnsd for-sez]

Back

Balanced Forces

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Two or more forces that are equal in size but opposite in direction, resulting in no change to an object's motion.

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Example: Two people pulling a rope with equal force in opposite directions show balanced forces.

Front

Acceleration Noun

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[ak-sel-uh-rey-shuhn]

Back

Acceleration

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The rate at which an object's velocity, which includes its speed and direction, changes over a period of time.

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Example: A spring pushes a ball, showing acceleration as the ball speeds up.

Front

Free Fall Noun

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[free fawl]

Back

Free Fall

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The motion of an object where gravity is the only significant force acting on it, causing it to accelerate downwards.

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Example: An apple falling from a tree shows free fall, where gravity is the only force acting on it.