Question

3.____________ thermometers do not use mercury.
4. Shiny and ________ surfaces or better reflectors ​

Answer 1

Answer:

• digital thermometers do not use mercury.

• Shiny and smooth surfaces or better reflectors.

Explanation:

Answer 2

3.____________ thermometers do not use mercury.

Ans: Digital thermometer

⚠  answers are googled for 4th ⚠

4.Shiny and ________ surfaces or better reflectors

Ans: The objects having shiny or polished surface reflects more light compared to the objects having dull or unpolished surface. Silver metal is the best reflector of light.