Explanation

A compound machine is a machine that is made up of two or more simple machines.

A bicycle, a crane, wheel borrow and scissors are examples of compound machines because they are made up of multiple simple machines, such as:

• Wheels and axles (simple machine: wheel)
• Pedals and levers (simple machine: lever)
• Gears and pulleys (simple machine: pulley)
• Inclined planes (simple machine: inclined plane)

Explanation

Force cannot change the content of an object, as it only affects the object's motion, shape, and position, but not its composition or internal structure.

Explanation

Explanation

Alpha (α) radiation consists of heavy, positively charged particles (alpha particles) that are emitted from the nucleus of an atom during certain types of radioactive decay.

Alpha particles are highly ionizing, meaning they can efficiently remove tightly bound electrons from atoms, resulting in the formation of ions.

Explanation

A simple bar chart is also called a pillar diagram or simple column chart. 

It is the most basic type of bar graph, used to compare discrete categories of data using rectangular bars of equal width.

When presented with vertical bars, it is commonly referred to as a column chart.