What do these two changes have in common? carving a piece of wood sanding a piece of wood Select all that apply. Both are only physical changes. Both are chemical changes. Both are caused by heating. Both are caused by cooling.

## Step 1<br />The problem asks us to identify the commonality between two activities: carving a piece of wood and sanding a piece of wood. <br /><br />## Step 2<br />Carving a piece of wood involves physically removing material from the wood to create a desired shape or design. This process does not alter the chemical composition of the wood, but rather changes its physical form.<br /><br />## Step 3<br />Similarly, sanding a piece of wood involves physically smoothing the surface of the wood by removing small amounts of material. This process also does not alter the chemical composition of the wood, but rather changes its physical form.<br /><br />## Step 4<br />Given these observations, we can conclude that both activities are physical changes, as they involve changes in the physical form of the wood without altering its chemical composition.