Science IFA #2 Review

Front

Heat always travels from _______ to _________.

Back

hot to cold

Front

A solid object heated to 120°C is placed inside a container of water at 33°C. What is the BEST explanation of the resulting change in temperature?

Back

The temperature of the water will increase; the temperature of the solid will decrease.

Front

If all the light waves are absorbed by an object, then the object will appear:

Back

black

Front

For a science project, you mix baking soda and vinegar. This is an example of a chemical reaction being transformed from which type of energy?

Back

thermal

Front

What energy changes occur as a rock falls from a six-story window 60 feet above the ground?

Back

The potential energy of the rock is transformed into kinetic energy.

Front

According to the graph, which of these remains constant throughout? Options: total amount of energy, potential energy, kinetic energy, time

Back

total amount of energy

Front

A softball is hit high into the air. As it rises, the softball

Back

loses kinetic energy and gains potential energy.

Front

Why is the efficiency of a fan not 100% if the law of conservation of energy holds true?

Back

Some of the chemical potential energy is transformed into heat energy as well as kinetic energy.

Front

How is the visible spectrum different from non-visible energy like inferred radiation?

Back

Visible light has a different wavelength than inferred light.

Front

Most likely wavelength of ultraviolet (UV) radiation?

Back

100 μm