8th Grade Science Reveiw

Front

What is density?

Back

Density is the mass of an object divided by its volume. It determines whether an object will float or sink in a fluid.

Front

What happens to an object with a density lower than water?

Back

It will float on the surface of the water.

Front

What type of wave has a frequency of 10^6 Hz?

Back

Radio waves.

Front

What is Newton's 3rd Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Tags

NGSS.MS-PS2-1

Front

How does mass affect acceleration when equal force is applied?

Back

An object with less mass will accelerate more than an object with more mass when the same force is applied.

Tags

NGSS.MS-PS2-2

Front

What is the relationship between mass and acceleration according to Newton's 2nd Law?

Back

Acceleration is directly proportional to the net force acting on an object and inversely proportional to its mass (F=ma).

Front

What is the difference between a Giant and a White Dwarf star?

Back

Giants are larger and hotter than White Dwarfs.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.

Front

What is the significance of buoyancy?

Back

Buoyancy is the ability of an object to float in a fluid, determined by the object's density compared to the fluid's density.

Front

What are Gamma Rays?

Back

Gamma rays are high-frequency electromagnetic waves with very short wavelengths, often emitted by radioactive materials.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3