5th Grade Science Unit 1 Review

A student conducts an investigation using caramel candy, paper plates, and a stopwatch. The student places a piece of the caramel candy on each of three plates. The student puts the plates in different locations around the school. The student will record the time it takes for each piece of caramel candy to change state and other observations in the table below. Which question is the student most likely trying to answer with this investigation?

• In which location does the caramel candy change state fastest?

• What causes the caramel candy to keep its shape?

• Why does the caramel candy change state?

• At what temperature does the caramel candy melt?

All experiments must include only one variable that the investigator changes. This is called the independent variable. Look closely at this graph. What was the independent variable in this investigation?

• The volume of water absorbed

• The time it took each brand to absorb the water

• The brand of paper towel used to absorb the water

• The height of the three bars that are shown on this graph

When can you safely remove your goggles in the laboratory?

• When you have finished working with chemicals

• When you have finished working with a heat source

• When you have finished reading through the procedure

• When you have finished putting away all chemicals and equipment

Tim wrote the steps he was planning to follow in carrying out an investigation. He wrote each step on a separate index card. Which of the following statements did Tim write as step 2?

• Formulate a testable hypothesis.

• Ask a well-defined question based on observations.

• Select and use the appropriate laboratory equipment.

• Organize, analyze, and interpret the data collected during the investigation.

Declan prepared the table below to include as part of his science fair project. Declan also wanted to include a simple graph as part of his science fair project. What must he be sure to do before making his graph?

• Conduct another trial.

• Repeat the experiment with another type of fish.

• Organize the data in order of increasing temperatures.

• Change the temperature measurements to degrees Fahrenheit.

A student was asked to compare the masses of four blocks that were all in the same size but made of different materials. The student used a balance to compare the masses of two blocks at the same time. The student repeated this process three more times with different pairs of blocks and recorded observations. Which list shows the blocks in order from least to greatest?

• Blocks N, M, L, P

• Blocks P, M, L, N

• Blocks N, L, M, P

• Blocks P, L, M, N

A group of students is performing an investigation to measure how much liquid water is produced from a 10 L sample of snow. What must occur in order for the students to perform this investigation?

• The sample must be kept in a freezer.

• The temperature of the sample must change.

• The investigation must be performed outside.

• The physical state of the sample must remain the same.

A student observed liquid wax dripping down the side of a burning candle. After putting out the candle’s flame, the student left the room. Several hours later the student observed that there was no longer any liquid on the side of the candle. Which statement explains what most likely happened to the liquid wax?

• The heat given off by the flame caused the candle wax to evaporate.

• The liquid wax changed back into a solid as it cooled.

• The liquid wax condensed and was absorbed by the candle.

• None of the above

For an investigation a teacher dropped a bolt into a container of maple syrup and asked students to remove it without touching the syrup. The students first tried to use a strong magnet to remove the bolt, but it remained on the bottom of the container. Which of these best describes some of the bolt’s physical properties?

• The bolt is magnetic and has the same density as the maple syrup.

• The bolt is nonmagnetic and more dense than the maple syrup.

• . The bolt is nonmagnetic and less dense than the maple syrup.

• The bolt is magnetic and less dense than the maple syrup.

A student puts four objects in a bucket filled with water. The objects are listed below. Which two objects are most likely less dense than the water?

• . Wood block and metal paper clip

• . Plastic ball and glass marble

• . Metal paper clip and glass marble

• Wood block and plastic ball