Science Review (Everything)

A wagon is pushed in a straight line. How would an increase in friction on the wagon wheels affect the wagon?

• It would cause the wagon to move faster.

• It would cause the wagon to change mass.

• It would cause the wagon to change direction.

• It would cause the wagon to slow down.

Which best explains why a bicycle slows down when its brakes are applied?

• The brakes heat the rubber on the bicycle tires.

• The brakes add energy to the bicycle.

• The brakes increase the force of gravity on the bicycle.

• The brakes cause frictional forces on the wheels of the bicycle.

When the sun warms water, which resulting process occurs?

• Condensation

• Evaporation

• Precipitation

• Run-off

Students observed a piece of iron change from shiny to rusty. What caused this change?

• a chemical reaction

• a heat reaction

• a cold reaction

• a physical reaction

Which is a characteristic of most single-celled organisms?

• They have a complex nervous system.

• They contain several different types of cells.

• They perform all life processes.

• They have a circulatory and a respiratory system.

Which statement best describes how a multicellular organism survives?

• Every cell carries out the same functions for the survival of the organism.

• The cells all have the same structures that allow the organism to survive.

• All life processes are performed by each cell for the survival of the organism.

• The cells have different functions, and together they are essential for the survival of the organism.

What is the relationship between the respiratory system and the circulatory system?

• The respiratory system exchanges oxygen and carbon dioxide with the circulatory system.

• The respiratory system exchanges oxygen and carbon monoxide with the circulatory system.

• The respiratory system exchanges oxygen and sugar with the circulatory system.

• The respiratory system exchanges oxygen and nitrogen with the circulatory system.

In what way are the digestive and circulatory systems alike?

• Both protect organs in the body.

• Both control movement of the body.

• Both absorb gases or nutrients into the body.

• Both provide structural support for the body.

Which is an example of a trait that is inherited?

• Eye Color

• Basketball Skills

• Cooking Skills

• Favorite Color

Stirring a cup of hot tea causes a metal spoon to get warm. Which statement best explains why the spoon gets warm?

• Heat energy transfers from the metal spoon to the hot liquid.

• Heat energy transfers from the hot tea to the spoon.

• Heat energy transfers from the air to the hot liquid, and then to the spoon.

• Heat energy transfers from the hot liquid to the cup, and then to the spoon.