CIA 3 Review

Front

What type of energy is food energy stored in your muscles?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like food, which is used by the body for various functions.

Front

In a swing, where is the kinetic energy the greatest?

Back

The kinetic energy is greatest at the lowest point of the swing (point Y) because the child is moving fastest there.

Front

What happens to gravitational potential energy as a child swings from the highest point to the lowest point?

Back

Gravitational potential energy decreases as the child swings down, converting to kinetic energy.

Front

How does the distance between magnets affect the force of magnetism?

Back

The force of magnetism is stronger when magnets are closer together.

Front

Which two letters have the most kinetic energy?

Back

X & Z have the most kinetic energy because they are in motion.

Front

What is the strongest electromagnet configuration?

Back

The strongest electromagnet is achieved with 100 turns on the coil, high current, and an iron core.

Front

Define kinetic energy.

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

Define gravitational potential energy.

Back

Gravitational potential energy is the energy an object possesses because of its position in a gravitational field, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is the relationship between potential energy and height?

Back

Potential energy increases with height; the higher an object is, the more potential energy it has.

Front

What factors affect the strength of an electromagnet?

Back

The strength of an electromagnet is affected by the number of turns in the coil, the current flowing through the coil, and the type of core material used.