8th Grade Physics: Matter, Energy, distance,displ Review Quiz

What is the difference between distance and displacement?

• Displacement is the total length of the path traveled

• Distance is the same as displacement

• Distance is the total length of the path traveled, while displacement is the shortest distance between the initial and final positions.

• Distance is the shortest distance between the initial and final positions

Explain the concept of energy transformations with an example.

• Energy transformation is the process of changing potential energy into nuclear energy. For example, when a roller coaster goes up a hill, potential energy is transformed into nuclear energy.

• Energy transformation is the process of changing temperature into light. For example, when a light bulb is turned on, temperature is transformed into light energy.

• Energy transformation is the process of changing matter into energy. For example, when a car engine burns fuel, matter is transformed into kinetic energy to make the car move.

• Energy transformation is the process of changing one form of energy into another. For example, when a car engine burns fuel, chemical energy is transformed into kinetic energy to make the car move.

Define a pure substance and provide an example.

• Example: CHEX MIX

• Example: Water

• Example: Soil

• Example: Air

Differentiate between a pure substance and a mixture.

• A pure substance is made up of only one type of particle, while a mixture is made up of two or more different substances mixed together.

• A pure substance is made up of two or more different substances mixed together, while a mixture is made up of only one type of particle.

• A pure substance is made up of only one type of particle, while a mixture is made up of only one type of particle.

• A pure substance is always a liquid, while a mixture is always a solid.

How many protons, neutrons, and electrons are present in an atom of Carbon-12?

• 12 protons, 12 neutrons, and 12 electrons

• 6 protons, 12 neutrons, and 6 electrons

• 6 protons, 6 neutrons, and 12 electrons

• 6 protons, 6 neutrons, and 6 electrons

What is the atomic number of an element and how is it related to its position in the periodic table?

• The atomic number is the number of electrons in the nucleus of an atom, and it determines the element's position in the periodic table.

• The atomic number is the number of protons in the outer shell of an atom, and it determines the element's position in the periodic table.

• The atomic number is the number of neutrons in the nucleus of an atom, and it determines the element's position in the periodic table.

• The atomic number of an element is the number of protons in the nucleus of an atom, and it determines the element's position in the periodic table.

Describe the organization of elements in the periodic table based on their properties.

• The elements are organized based on their properties.

• The elements are organized based on their weight.

• The elements are organized based on their color.

• The elements are organized based on their age.

Calculate the distance traveled by an object if it moves 5 meters north, 3 meters east, and then 2 meters south.

• 6 meters

• 1 meter

• 8 meters

• 10 meters

A car travels 200 meters north and then 150 meters south. What is the displacement of the car?

• 350 meters south

• 200 meters south

• 100 meters north

• 50 meters south

Explain how energy is transformed in a simple pendulum.

• Energy is transformed from thermal to sound and back to thermal as the pendulum swings.

• Energy is transformed from potential to kinetic and back to potential as the pendulum swings.

• Energy is transformed from electrical to mechanical and back to electrical as the pendulum swings.

• Energy is transformed from kinetic to potential and back to kinetic as the pendulum swings.