Grade 5 Science Review

Landon conducted an experiment with salt. Which of the following is a testable question that could be answered with his experiment?

• Does salt taste good?
• Will the amount of salt added to a solution increase it's conductivity?
• Which brand of salt satisfies the craving for salt users?
• Why do people in some countries use more or less salt?

What do air, glass and water have in common?

• They are elements.
• They are all gases at room temperature.
• They all allow light to pass through them.
• They are all made up of the same atom.

DNA technology has improved greatly in recent years. Which task has been made easier by the development of DNA technology?

• Identifying genetic disorders.
• determining the parts of an atom.
• observing distant objects in space.
• making very accurate measurements.

When the temperature of water changes from 10 degrees Celsius to -10 degrees Celsius, the water changes from a...

• solid to a gas.
• a liquid to a gas.
• a liquid into a solid.
• a solid to a liquid.

Which property causes water to form droplets?

• mass
• density
• buoyancy
• surface tension

Which statement best explains how scientist use a telescope?

• To see things that are far away.
• To see things that are very small.
• To hear things that are far away.
• To hear sounds that are very quiet.

Ben is conducting an investigation to compare the speed at which two insects travel along the ground. Which two tools should he include in his investigation?

• meter stick and stopwatch
• graduated cylinder and balance.
• microscope and ruler
• thermometer and scale

Lily was ready to drive to work. When she reached her car, she saw a flat tire. She made the following statement, " I must have run over a nail." Her explanation is an example of ...

• a prediction.
• a conclusion.
• an inference.
• a hypothesis.

Darla found the mass of seven rock samples. She wants to find the average mass of the rock samples. What steps should Darla use to find the mean?

• Add all the masses, then divide by seven.
• Add the masses, then multiply by seven.
• Arrange the masses from lowest to highest, then find the middle mass.
• Arrange the masses from lowest to highest, then find the total mass.

Read the following information Jonathan recorded about an experiment.
At the start of the experiment, both plants were 3 inches tall.
At the end of the experiment, Plant A was 7 inches tall, Plant B was 5 inches tall.
Plant A grew taller because it had more sunlight.
What part of Jonathan's notes provides an explanation of his results?

• Plant A was 7 inches tall.
• Plant B was 5 inches tall.
• Plant A grew tall because it had more sunlight.
• At the start of the experiment, both plants were 3 inches tall.