Science ACT Prep

Front

What is viscosity?

Back

Viscosity is a measure of a fluid's resistance to flow. It describes how thick or sticky a fluid is.

Front

How does molecular mass affect viscosity?

Back

Generally, larger molecular mass can lead to higher viscosity, but other factors like molecular structure and temperature also play a significant role.

Front

What is the unit of frequency?

Back

Hertz (Hz) is the unit of frequency, representing cycles per second.

Front

What is the relationship between depth and pressure in fluids?

Back

As depth increases in a fluid, the pressure also increases due to the weight of the fluid above.

Front

What sound level in decibels (dB) can cause pain in human ears?

Back

Sounds at 160 dB can cause pain in human ears.

Front

What is potential energy (PE)?

Back

Potential energy is the energy stored in an object due to its position or configuration.

Front

How is potential energy calculated for an object at height?

Back

Potential energy (PE) = mass (m) × gravitational acceleration (g) × height (h).

Front

What is the significance of the y-axis in a graph?

Back

The y-axis typically represents the dependent variable in a graph, showing how it changes in response to the independent variable on the x-axis.

Front

What does a higher frequency indicate in sound waves?

Back

A higher frequency indicates a higher pitch of the sound.

Front

What is the difference between intensity in dB and frequency in Hz?

Back

Intensity in dB measures the loudness of a sound, while frequency in Hz measures the pitch.