Science PM Review

Electrical energy is able to move through materials that are conductors, but insulators do not conduct electricity well. Which of the following materials are good conductors?

I.rubber

II.plastic

III.metal

IV.wood

• III and IV only

• I, II, and IV only

• III only

• I and II only

The picture shows an object that can be found in our solar system. The object's shape is not round, and the object is made of rock and metal. The object does not have a "tail" that can be seen in the sky. What is the object?

• a comet

• a planet

• a star

• an asteroid

The Sun can be seen in the sky on days when it is not cloudy. In which direction does the Sun appear to move during the day?

• from north to south

• from west to east

• from south to north

• from east to west

When you ______ wood, the wood goes through a chemical change.

• saw

• paint

• chop

• burn

Which structure is most like the structure a guppy uses for movement?

• the leg of an insect

• the root of a plant

• the beak of a bird

• the fur of a wolf

Which of the following are examples of forces acting upon objects without being in contact with the objects?

• 1 and 4

• 1 and 2

• 2 and 3

• 2 and 4

Stan gets frustrated while working on his math homework, and he tears his paper into several pieces. What kind of change has his paper gone through?

• chemical change

• physical change

• change of state

• phase change

In the table shown above, which substance or object is listed in the wrong group?

• steam

• ice cube

• milk

• pencil

In scientific investigations, observation is different from interpretation. Which of the following shows an interpretation of data obtained from a plant growth experiment?

• The plants in the shade had about two flowers each, while the plants in the sun had about nine flowers each.

• The plants in the sun are stronger and healthier than the plants in the shade.

• The plants in the shade have lighter-colored leaves than the plants in the sun.

• The plants in the shade grew about 2.3 centimeters, while the plants in the sun grew about 4.1 centimeters.

When someone turns on an oven, they are transforming electrical energy into ________ energy.

• chemical

• sound

• potential

• heat