8th Grade Science Summary

Front

What is the difference between velocity and speed?

Back

Velocity has a direction associated with it, while speed has no specific direction.

Front

Who should you ask for help in identifying an unknown plant species?

Back

Botanist

Front

What does Earth revolve around in our solar system?

Back

A small star classified as an average star.

Front

What term describes the increase in speed?

Back

Acceleration.

Front

Which objects experience an unbalanced force? A book sliding across a table, a ball sitting on a shelf, a can rolling down a ramp, a swing moving back and forth, a car traveling at a constant speed of 15 m/s, a bird landing on a branch?

Back

The can, the swing, and the bird.

Front

What is the definition of acceleration?

Back

Acceleration is the rate of change of velocity of an object.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the role of a botanist?

Back

A botanist studies plants and their environments.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is a balanced force?

Back

A balanced force occurs when two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.