To represent $2 \times 2 \times 2 \times 2$ using powers, we write it as:

$2^4$

Now, calculate:

$2^4 = 2 \times 2 \times 2 \times 2 = 16$

Thus, $2^4 = 16$.

Would you like further details or clarification?

Here are five related questions to explore:

1. How would you express $3 \times 3 \times 3 \times 3 \times 3$ using powers?
2. What is the value of $5^3$?
3. Can you express $2^5$ in expanded form and calculate it?
4. What is $10^2$ and how would you represent it as repeated multiplication?
5. How would you calculate $4^3$?

Tip: Powers are a shorthand way to represent repeated multiplication of the same number.