Q2 Science Review Quiz 4th Grade

What gravity is?

• Gravity is the attraction between two objects.

• Gravity is the separation between two objects.

Draw an example of an object shifting from potential energy to kinetic energy. 

What is the difference between kinetic and potential energy? 

• Potential energy is the tendency of an object to resist motion whereas Kinetic energy is a directional force upon an object

• Kinetic energy is the tendency of an object to resist motion whereas Potential energy is a directional force upon an object

What is the difference between Speed and Velocity?

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Answer explanation

Hint: Speed is scalar and Velocity is a vector, use your own words to write your answer

What is the formula to find speed? 

What is Newton’s First Law of Motion? 

• An object at rest will stay at rest and an object in motion will stay in motion unless a force changes state of motion

• When two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction

• The time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.

The flow of electric charges

• Insulator 

• Electricity

• Battery

• Conductor

Give an example of a kind of energy that travels in waves.  

Material that allows electricity to pass through easily

• Battery

• Open circuit

• Resistance

• Conductor

Draw a Series circuit and a Parallel circuit