Grade 6- Topic 4/Thermal Energy

Front

Why is heat the correct term to use when you cook dinner on a hot stove or when a cool metal is heated by the sun’s energy?

Back

They show that heat flows from something warmer to something cooler.

Front

What could Eric conclude about what happens when heat is added or removed from an object after he completed his test with the mug of hot chocolate?

Back

Arrow A shows the direction heat flowed because the temperature of his hand increased as heat was absorbed by his hand.

Front

When a boy and his friends arrive at a barbecue, they offer to help their friend cook. They place meat and vegetables from the refrigerator onto the hot grill. When the food is cooked and taken off the grill, it is at a much higher temperature than it was before it was cooked. Which statement is true about the food?

Back

The kinetic energy of the food particles increased, causing the food temperature to rise.

Front

How were the student's hands warmed at the football game?

Back

Heat was transferred by conduction, resulting in an increase in kinetic energy.

Front

Which of these statements are true about the amount of energy transformed in the campfire?

Back

The amount of heat and light energy released equals the amount of chemical energy that is burned.

Front

How does the sand make you too hot when lying down at the beach?

Back

Transferring heat by conduction.

Front

In photosynthesis, solar energy undergoes a transformation when it changes from light energy to chemical energy. When the sun warms Earth’s surface, thermal energy is_____________________ to land and water.

Back

transferred

Front

What transformations usually happen when a car battery is active and the headlights come on?

Back

chemical → electrical → light

Front

The family added a layer of fiberglass to the outside of their metal hot water heater. This saves energy because the metal is a good _______________________________.

Back

conductor

Front

Why does the steel front door stick when it's warm outside but not when it's cool?

Back

The metal in the door expands when it becomes warm due to an increase in kinetic energy, and contracts when it's cooler.