Science Q1 and Q2 T2

The energy of a moving object is

• kinetic energy.

• potential energy.

• chemical energy.

• nuclear energy.

Stored energy is called

• thermal energy.

• kinetic energy.

• mechanical energy.

• potential energy.

As a pendulum swings back and forth

• potential energy is transformed into kinetic energy.

• kinetic energy is transformed into potential energy.

• at the lowest part of its swing, its energy is all kinetic

• at the endpoints of its swing, its energy is all potential.

• all of the above

As the rubber band is released and moves forward, which of the following is true?

• The total energy of the system is increasing.

• Potential energy is being converted to kinetic energy.

• Kinetic energy is being converted to potential energy.

• All of the energy is disappearing from the system.

On a cold, winter day, Sheena rubs her hands together. Stored chemical energy is transformed into mechanical energy. Due to the Law of Conservation of Energy some of the energy is also transformed into

• heat energy

• light energy

• solar energy

• kinetic energy

Why is the box sitting on the table not moving?

• No forces are acting on the box.

• The table pushes up with the same force that gravity pulls down.

• Gravity is keeping the box down on the table.

• Gravity is pulling down, but the table is in the way.

When the ball is on its way back up through point B, what force(s) are acting on it?

• Only gravity and air friction are acting on the ball.

• Only the force from the floor is acting on the ball.

• Both gravity and the force from the floor are acting on the ball.

• There are no forces acting on the ball.

At which point is kinetic energy the greatest?

• W

• X

• Y

• Z

As speed of an object increase, the kinetic energy ____________

• increases 
• decreases 
• stays the same

What kind of energy is in a rock at the edge of a cliff?

• Potential
• Kinetic