Question

while the human eye cannot see infrared waves, we feel infrared waves as heat.
a burning fire emits both visible light and infrared waves. when the radiant energy carried by infrared waves strikes an object, it is converted into heat, or thermal energy. so when you warm your hands beside a campfire, the energy carried by infrared waves travels from the fire to your hands and warms them up.
select the true statements.

• infrared waves are invisible to the human eye.
• only visible light is emitted by a fire.
• infrared waves carry energy from the fire to your hands.
• radiant energy is converted to thermal energy when infrared waves strike an object.

Explanation:

• The first statement is true as the text says "the human eye cannot see infrared waves".
• The second statement is false because the text states "A burning fire emits both visible light and infrared waves".
• The third statement is true as "the energy carried by infrared waves travels from the fire to your hands".
• The fourth statement is true since "when the radiant energy carried by infrared waves strikes an object, it is converted into heat, or thermal energy".

Answer:

• Infrared waves are invisible to the human eye.
• Infrared waves carry energy from the fire to your hands.
• Radiant energy is converted to thermal energy when infrared waves strike an object.