Compare Speed and Energy - 4th Grade Science
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Which has more kinetic energy if two objects move at the same speed but have different masses?
Which has more kinetic energy if two objects move at the same speed but have different masses?
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The object with greater mass has more kinetic energy. Mass increases kinetic energy when speed stays constant.
The object with greater mass has more kinetic energy. Mass increases kinetic energy when speed stays constant.
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Which object is faster if A travels $18\ \text{m}$ in $3\ \text{s}$ and B travels $25\ \text{m}$ in $5\ \text{s}$?
Which object is faster if A travels $18\ \text{m}$ in $3\ \text{s}$ and B travels $25\ \text{m}$ in $5\ \text{s}$?
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A is faster. A: $18 \div 3 = 6\ \text{m/s}$; B: $25 \div 5 = 5\ \text{m/s}$.
A is faster. A: $18 \div 3 = 6\ \text{m/s}$; B: $25 \div 5 = 5\ \text{m/s}$.
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Which statement is best supported: same mass, speeds $2\ \text{m/s}$ and $4\ \text{m/s}$; which has more kinetic energy?
Which statement is best supported: same mass, speeds $2\ \text{m/s}$ and $4\ \text{m/s}$; which has more kinetic energy?
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The object at $4\ \text{m/s}$ has more kinetic energy. Same mass, but $4\ \text{m/s}$ is twice as fast as $2\ \text{m/s}$.
The object at $4\ \text{m/s}$ has more kinetic energy. Same mass, but $4\ \text{m/s}$ is twice as fast as $2\ \text{m/s}$.
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Which has more kinetic energy: A is $3\ \text{kg}$ at $4\ \text{m/s}$, B is $1\ \text{kg}$ at $4\ \text{m/s}$?
Which has more kinetic energy: A is $3\ \text{kg}$ at $4\ \text{m/s}$, B is $1\ \text{kg}$ at $4\ \text{m/s}$?
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A has more kinetic energy. Same speed, but A has $3\ \text{kg}$ vs B's $1\ \text{kg}$.
A has more kinetic energy. Same speed, but A has $3\ \text{kg}$ vs B's $1\ \text{kg}$.
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Which has more kinetic energy: a $4\ \text{kg}$ cart at $2\ \text{m/s}$ or a $2\ \text{kg}$ cart at $2\ \text{m/s}$?
Which has more kinetic energy: a $4\ \text{kg}$ cart at $2\ \text{m/s}$ or a $2\ \text{kg}$ cart at $2\ \text{m/s}$?
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The $4\ \text{kg}$ cart at $2\ \text{m/s}$. Same speed, but $4\ \text{kg}$ has more mass than $2\ \text{kg}$.
The $4\ \text{kg}$ cart at $2\ \text{m/s}$. Same speed, but $4\ \text{kg}$ has more mass than $2\ \text{kg}$.
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Which object is faster: A travels $15\ \text{m}$ in $3\ \text{s}$ or B travels $15\ \text{m}$ in $5\ \text{s}$?
Which object is faster: A travels $15\ \text{m}$ in $3\ \text{s}$ or B travels $15\ \text{m}$ in $5\ \text{s}$?
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A is faster. A takes $3\ \text{s}$ vs B's $5\ \text{s}$ for same distance.
A is faster. A takes $3\ \text{s}$ vs B's $5\ \text{s}$ for same distance.
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Which object is faster: A travels $30\ \text{m}$ in $6\ \text{s}$ or B travels $24\ \text{m}$ in $6\ \text{s}$?
Which object is faster: A travels $30\ \text{m}$ in $6\ \text{s}$ or B travels $24\ \text{m}$ in $6\ \text{s}$?
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A is faster. A travels $30\ \text{m}$ vs B's $24\ \text{m}$ in same time.
A is faster. A travels $30\ \text{m}$ vs B's $24\ \text{m}$ in same time.
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Which option shows the correct speed for $20\ \text{m}$ traveled in $5\ \text{s}$?
Which option shows the correct speed for $20\ \text{m}$ traveled in $5\ \text{s}$?
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$4\ \text{m/s}$. $20 \div 5 = 4$, so speed equals $4\ \text{m/s}$.
$4\ \text{m/s}$. $20 \div 5 = 4$, so speed equals $4\ \text{m/s}$.
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Which option shows the correct speed for $12\ \text{m}$ traveled in $3\ \text{s}$?
Which option shows the correct speed for $12\ \text{m}$ traveled in $3\ \text{s}$?
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$4\ \text{m/s}$. $12 \div 3 = 4$, so speed equals $4\ \text{m/s}$.
$4\ \text{m/s}$. $12 \div 3 = 4$, so speed equals $4\ \text{m/s}$.
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What tool is typically used to measure time when comparing speeds in an experiment?
What tool is typically used to measure time when comparing speeds in an experiment?
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Stopwatch or timer. Essential tool for measuring elapsed time in speed experiments.
Stopwatch or timer. Essential tool for measuring elapsed time in speed experiments.
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What evidence can you use to compare speeds in a fair test?
What evidence can you use to compare speeds in a fair test?
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Same distance and measured time (or same time and distance). Control one variable while measuring the other for fair comparison.
Same distance and measured time (or same time and distance). Control one variable while measuring the other for fair comparison.
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Which has more kinetic energy if two objects have the same mass but different speeds?
Which has more kinetic energy if two objects have the same mass but different speeds?
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The faster object has more kinetic energy. Speed increases kinetic energy when mass stays constant.
The faster object has more kinetic energy. Speed increases kinetic energy when mass stays constant.
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Which object is faster if both travel the same distance but one takes less time?
Which object is faster if both travel the same distance but one takes less time?
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The object that takes less time is faster. Same distance in less time means higher speed.
The object that takes less time is faster. Same distance in less time means higher speed.
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What is speed in science, written as a formula using distance and time?
What is speed in science, written as a formula using distance and time?
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Speed $=$ distance $\div$ time. Speed measures how fast something moves by comparing distance to time.
Speed $=$ distance $\div$ time. Speed measures how fast something moves by comparing distance to time.
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What does it mean if an object has a greater speed than another object?
What does it mean if an object has a greater speed than another object?
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It covers more distance per unit time. Higher speed means traveling more meters each second.
It covers more distance per unit time. Higher speed means traveling more meters each second.
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What units are commonly used for speed when distance is meters and time is seconds?
What units are commonly used for speed when distance is meters and time is seconds?
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Meters per second $(\text{m/s})$. Standard SI unit when measuring distance in meters and time in seconds.
Meters per second $(\text{m/s})$. Standard SI unit when measuring distance in meters and time in seconds.
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Which object is faster if both move for the same time but one travels farther?
Which object is faster if both move for the same time but one travels farther?
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The object that travels farther is faster. Greater distance in same time means higher speed.
The object that travels farther is faster. Greater distance in same time means higher speed.
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What is kinetic energy in a single, grade-appropriate definition?
What is kinetic energy in a single, grade-appropriate definition?
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Energy of motion. The energy an object has because it's moving.
Energy of motion. The energy an object has because it's moving.
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Choose the best evidence that an object has more kinetic energy: faster motion, brighter color, or colder temperature.
Choose the best evidence that an object has more kinetic energy: faster motion, brighter color, or colder temperature.
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Faster motion. Speed directly indicates kinetic energy level.
Faster motion. Speed directly indicates kinetic energy level.
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Which moving object has more kinetic energy if their speeds are equal: the larger mass or the smaller mass?
Which moving object has more kinetic energy if their speeds are equal: the larger mass or the smaller mass?
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The larger mass has more kinetic energy. More mass means more kinetic energy at same speed.
The larger mass has more kinetic energy. More mass means more kinetic energy at same speed.
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