Science 8 Final Exam Study Guide

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. It is greatest when an object is at rest at a height, such as a ball at the top of a slide.

Front

What is net force?

Back

Net force is the sum of all forces acting on an object. It determines the object's motion and direction.

Front

What is the order of objects during a solar eclipse?

Back

The correct order is Sun, Moon, Earth.

Front

Which object has potential energy?

Back

The ball at the top of the slide has potential energy because it is elevated and can fall.

Front

What are gas giants?

Back

Gas giants are a group of planets that are farther from the sun and are primarily composed of gases, such as Jupiter and Saturn.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. It depends on the mass and speed of the object.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces cause an object to accelerate.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its height above the ground, calculated as weight times height.

Front

What is the formula for calculating kinetic energy?

Back

The formula for kinetic energy is KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the role of the sun in the solar system?

Back

The sun is the central star of the solar system, providing light and heat, and its gravitational pull keeps the planets in orbit.