Motion

The inertia force affects the ............ objects.

• moving

• static

• moving and static

• no correct answer

Friction is always ...............

• in the same direction of motion

• against motion

• perpendicular to the motion

• parallel to the motion in any direction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The change in an object's position or direction as the time passes relative to a frame of reference is called ............ motion.

• periodic

• vibrating

• relative

• circular

The movement of electrons around the nucleus is considered ................. motion.

• vibrating

• circular

• transitional

• wave

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

.......................waves is an example of mechanical waves.

• water

• light

• radio

• ultraviolet

Tags

NGSS.MS-PS4-2

We see lightning before hearing thunder because .................

• lightning occurs before thunder.

• sound needs medium to travel through.

• the speed of light is 340 m/sec.

• the speed of light is much greater than that of sound.

Tags

NGSS.MS-PS4-1

Periodic motion is changed between initial and final positions

• True

• False

Water waves are electromagnetic waves.

• True

• False

When you are in a moving car and another car moves beside you in the same direction at the same speed, you will imagine that the two cars don't move.

• True

• False

Sound waves are produced due to the vibration of medium particles

• True

• False

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2