Exploring Motion

Which phrase best describes the main goal of this lesson?

• To memorize long scientific formulas

• To learn different ways things can move

• To build a robot

• To study plants

Answer explanation

The main goal of the lesson is to learn different ways things can move, which encompasses various concepts of motion rather than focusing on memorization, building, or studying plants.

Which sentence best defines movement?

• Movement is when something changes position.

• Movement is staying in the same place.

• Movement is only when things go fast.

• Movement is only when things spin.

Answer explanation

The correct choice defines movement accurately as it involves a change in position. The other options incorrectly describe movement as staying still, being fast, or only involving spinning.

Which idea explains a movement path?

• Everything that moves follows a path.

• Only slow things follow a path.

• Paths are only for animals.

• A path means the object does not move.

Answer explanation

The correct choice, 'Everything that moves follows a path,' accurately describes that all moving objects, regardless of speed or type, trace a path during their movement. The other options are incorrect as they limit or misinterpret the concept of movement.

A toy car rolls fast and then slows down. Which statement is true about its speed?

• Speed cannot change.

• Speed can be fast or slow.

• Speed is always the same for every object.

• Speed only matters for patterns.

Answer explanation

The toy car's speed changes as it rolls fast and then slows down, indicating that speed can vary. Therefore, the correct statement is that speed can be fast or slow.

Which path best shows linear motion?

• A straight line from point A to point B

• A circle around a track

• A zigzag line

• A wavy line

Answer explanation

A straight line from point A to point B represents linear motion because it indicates movement in a single direction without deviation, unlike the other options which involve curves or changes in direction.

Which example is curvilinear motion?

• Sliding a book straight across a table

• A train moving on a perfectly straight track

• A car turning around a corner

• Standing still

Answer explanation

Curvilinear motion involves movement along a curved path. A car turning around a corner exemplifies this, as it changes direction continuously, unlike the other options which involve straight or no motion.

What does curvilinear mean?

• Moving in a straight line

• Moving up and down only

• Moving in curves

• Not moving at all

Answer explanation

Curvilinear refers to movement that follows a curved path, distinguishing it from straight lines or vertical/horizontal movements. Therefore, the correct answer is 'Moving in curves'.

Which action shows linear motion?

• Drawing a wavy line

• Walking in a straight hallway without turning

• Running around a bend

• Turning a steering wheel

Answer explanation

Walking in a straight hallway without turning demonstrates linear motion because it involves moving in a straight line without any deviation, unlike the other options which involve curves or changes in direction.

A path that bends and curves is called what kind of motion?

• Linear motion

• Curvilinear motion

• Rotational motion

• Stillness

Answer explanation

A path that bends and curves is described as curvilinear motion. This type of motion involves a trajectory that is not straight, distinguishing it from linear motion, which is straight, and rotational motion, which involves spinning.

Which phrase best describes circular motion?

• Moving in a straight line

• Moving in a perfect circle

• Bouncing up and down

• Stopping and starting

Answer explanation

Circular motion is best described as 'moving in a perfect circle' because it involves an object traveling along a curved path that continuously changes direction, unlike straight lines or bouncing.