Energy Conservation

Front

As the cars of a rollercoaster race down a hill, energy transformations take place. Which of the following is true?

Back

Some potential energy is transformed to kinetic energy and other forms of energy.

Front

Based on the law of conservation of energy, what happened to the light energy in the reaction: water + carbon dioxide + light energy = sugar + oxygen?

Back

It was converted into chemical energy stored in the sugar.

Front

Given the energy transformations with Anita and her bicycle, which statement is true?

Back

The law of conservation of energy was obeyed.

Front

What happens during every transformation of energy?

Back

Energy is conserved.

Front

If the superhero must obey the law of conservation of energy, which of the following can he actually do? Options: 1: "I can create an energy force field to save the city." 2: "I can destroy the energy before it destroys the city." 3: "I can convert all the energy before it can do any harm to the city." 4. "I can absorb all the energy and make it go away"

Back

Convert all the energy before it can do any harm to the city.

Front

Which process best demonstrates the law of conservation of energy? Options: a person cutting down trees in a forest, a person recycling various materials, a person using a bulldozer to tear down a building, a person creating a painting.

Back

a person recycling various materials

Front

How does listening to music on a radio obey the law of conservation of energy?

Back

Electrical energy is converted into other forms of energy, such as sound.

Front

What happened to the batteries when Katrina's digital camera batteries were dead?

Back

All the energy stored in the batteries had been transformed.

Front

What answer did Larissa give her math teacher about where she got all of her energy?

Back

I just transform it.

Front

If the energy content of an object is 1,000 J and later it is 900 J, what happened to 100 J of its energy?

Back

The object transferred some of its energy to its surroundings.