Lesson 14 Reading Two— How Does an Oven Make Hot Chocolate Hot?

Lesson 14 Reading Two— How Does an Oven Make

Hot _________________Hot?

• Lava

• Chocolate

• Soup

• Oranges

As liquids are heated, the molecules that make up the liquids move faster.

• true

• false

• no

Regular ovens use hot air to heat food. When you turn on an oven, you can sometimes see the coils get hot, or you can see a ______________.

• bird

• flame

• camel

• person

The __________ as molecules in the air collide with a hot surface. Hot air in the oven then heats the food.

• AIR

• WATER

• ICE

• MATTER

Fast- moving molecules in the air

collide with the molecules on the surface of the food. The collisions make molecules in the food

move faster.

• true

• false

• no

Remember that the faster the molecules move, the more energy they have. As the food molecules get more energy from the hot air molecules around them, the food gets ______________.

• colder

• hotter

• cooler

• freezing

It takes ___________ for the food to become warm all the way to the center.

• oceans

• time

• weather

• geology

Microwave ovens do not use hot air to heat food. Instead, they work by heating food with a form of light that your eyes cannot detect, called _______________.

• nano waves

• microwaves

• weather

• learning

When you turn on a _____________ oven, a device in the oven makes microwaves. The microwaves reflect off the walls of the oven and move in the oven in all directions.

• weber

• explore

• microwave

• volcano

Microwaves, like all light, are a form of __________________. As microwaves pass through food, they are absorbed by molecules in the food.

• food

• force

• energy

• motion