Easy Round Grade 8

What refers to how large or strong is the force?

• Magnitude

• Line of action

• Velocity of the object

• Direction of the force

What force acts perpendicular to the surface of the object in contact with?

• Applied

• Gravitational

• Normal

• Tension

Who formulated the three laws of motion?

• Aristotle

• Isaac Newton

• Thomas Edison

• Alexander Graham Bell

Which law states that forces act with equal magnitude and opposite direction?

• Law of inertia

• Law of interaction

• Law of acceleration

• Law of gravitational force

Which of the following quantities, when doubled, has the greatest effect on the amount of kinetic energy?

• Mass

• Motion

• Position

• Weight

Violet is bent most among the seven colors because it has the ________.

• Highest frequency

• Lowest frequency

• Longest wavelength

• Shortest Wavelength

The potential energy is the energy an object has due to its ______.

• Mass

• Motion

• Position

• Weight

Which has the least energy among the colors of a rainbow?

• Green

• Orange

• Red

• Violet

What refers to the bending of light as it passes from one medium into another?

• Frequency

• Reflection

• Refraction

• Wavelength

Which expands the greatest when heated at the same temperature?

• Gas

• Solid

• Liquid

• solid, liquid, gas