Speed Check
Car A moves at 4 m/s. Car B moves at 9 m/s. Which car is faster?
Teams: discuss your claim and evidence. faster?
Car B; 9 m/s is greater than 4 m/s.
The same toy car moves at 3 m/s and then at 8 m/s. During which trial does it have more energy?
Teams: Discuss your claim and evidence.
The 8 m/s trial.
One ball barely moves the cups. Another scatters them across the floor. Which ball shows evidence of more energy?
Teams: discuss your claim and evidence.
The ball that scatters the cups.
Agree or disagree: A ball at 10 m/s has more energy than the same ball at 5 m/s.
Teams: discuss your claim and evidence.
Agree; it is moving faster.
A ball speeds up before hitting blocks. Predict what may happen to the blocks.
Teams: discuss your claim and evidence.
More blocks may move, or they may move farther.
Put these speeds in order from slowest to fastest: 12 m/s, 3 m/s, 8 m/s.
Teams: discuss your claim and evidence.
3 m/s, 8 m/s, 12 m/s.
True or false: For the same object, more speed means more energy.
Teams: discuss your claim and evidence.
True.
Which is better evidence of a car's energy: its color or how far it pushed a block?
Teams: discuss your claim and evidence.
How far it pushed the block.
Agree or disagree: Slower objects always have more energy.
Teams: discuss your claim and evidence.
Disagree; for the same object, greater speed means greater energy.
Two identical cars hit identical towers. The faster car will most likely cause what change?
Teams: discuss your claim and evidence.
It will most likely knock down or move more of the tower.
A ball changes from 6 m/s to 14 m/s. Did it speed up or slow down?
Teams: discuss your claim and evidence.
It sped up.
Identical Ball A moves at 6 m/s and Ball B at 13 m/s. Which has less energy?
Teams: discuss your claim and evidence.
Ball A has less energy.
Ball A knocks over 2 pins. Ball B knocks over 8 identical pins. What evidence supports that Ball B had more energy?
Teams: discuss your claim and evidence.
Ball B knocked over more pins.
Mia says the fastest car has the most energy. Is her claim supported?
Teams: discuss your claim and evidence.
Yes; speed is evidence of the car's energy.
A heavier and lighter ball move at the same speed. Which may move more cups?
Teams: discuss your claim and evidence.
The heavier ball may move more cups because it can have more energy at the same speed.
Runner A travels 5 meters each second. Runner B travels 11 meters each second. Who covers more distance in one second?
Teams: discuss your claim and evidence.
Runner B covers more distance.
Rank identical cars moving at 4, 9, and 16 m/s from least energy to most energy.
Teams: discuss your claim and evidence.
4 m/s, 9 m/s, 16 m/s.
A fast marble moves a cup 40 cm; a slow marble moves it 8 cm. Give two pieces of evidence that the fast marble had more energy.
Teams: discuss your claim and evidence.
It moved faster and moved the cup farther (40 cm compared with 8 cm).
Jay says a ball has the most energy because it was rolled first. Evaluate his claim.
Teams: discuss your claim and evidence.
The claim is not supported; roll order is not evidence of energy.
Ball X moves at 7 m/s and knocks over 3 cups. Ball Y moves at 16 m/s and scatters 9 cups. Construct a claim with evidence.
Teams: discuss your claim and evidence.
Ball Y had more energy because it moved faster and scattered more cups.
Four identical balls move at 2, 7, 10, and 15 m/s. Which has the least speed?
Teams: Discuss your claim and evidence.
The ball moving at 2 m/s.
Complete the rule: As the speed of the same object increases, its energy ____.
Teams: discuss your claim and evidence.
Increases.
Why is 'the blue ball looked cooler' not scientific evidence that it had more energy?
Teams: discuss your claim and evidence.
Appearance does not measure speed or the change the ball caused.
One student uses speed as evidence. Another uses how far the cups scattered. Can both kinds of evidence support a claim about energy?
Teams: discuss your claim and evidence.
Yes; speed and the amount of movement caused can both support the claim.
Final explanation: How are an object's speed, energy, and ability to cause change related?
Teams: discuss your claim and evidence.
For the same object, greater speed means more energy, so it can cause a greater change when it interacts with something.