Final 7 SGO 2425

While playing soccer, Kai noticed that the ball eventually stops rolling on the grass. Which of the following is a contact force that causes the ball to stop?

• Magnetism

• Friction

• Gravity

• Electric force

#13 Show all your work on your answer document. D=m/v

• 1 g/cm³

• 0.875 g/cm³

• 4 g/cm³

• 16 g/cm³

Benjamin pushes a box across the floor. What is the net force?

• The total force acting on an object

• The speed of an object

• The weight of an object

• The color of an object

Which of the following shows an energy transformation from chemical energy to electrical to light energy?

• A bolt of lightning lights the night sky.
• A candle glows brightly in the dark.
• A fire in a fireplace lights up a room.
• A battery causes a flashlight to shine.

What type of energy transformation occurs when a hawk eats a mouse and then uses that energy to fly?

• chemical to mechanical

• mechanical to chemical

• thermal to mechanical

• mechanical to thermal

Jackson is holding a ball at the top of a hill. What is the difference between the potential energy of the ball at the top and its kinetic energy as it rolls down?

• Potential energy is stored, kinetic energy is in motion

• Potential energy is in motion, kinetic energy is stored

• Both are the same

• Both are types of forces

James and Luna are pushing a box across the floor. How can they determine if the forces they apply are balanced?

• By measuring its speed

• By finding the net force

• By observing its color

• By checking its temperature

Priya is holding a book above the ground. What type of energy does the book have?

• Energy of an object in motion

• Energy stored in an object

• Energy that is invisible

• Energy that is always balanced

Luna is riding her bicycle down a hill. What type of energy does Luna's bicycle have as it moves?

• Potential Energy

• Kinetic Energy

• Energy that is invisible

• Energy that is always balanced

When Zoe and Anika are pushing a box with equal force from opposite sides, what happens to the box?

• The box speeds up

• The box slows down

• The box remains in constant motion or at rest

• The box changes color