Nature of Science Test Review

A statement that describes what scientists expect to happen every time under a particular set of conditions is a

• Scientific investigation

• Scientific observation

• Scientific theory

• Scientific law

Why would a scientific theory get rejected?

• It is an opinion

• It covers too broad a topic

• It applies everywhere in the universe

• New evidence contradicts it

Scientists need to know how gravity acts on a rocket that is sending a machine to Mars. They use an equation that describes how gravity relates to the mass of two objects and the distance between two objects. Which term describes this equation?

• A scientific theory

• A scientific law

• An observation

• A graph

Which is true about scientific knowledge?

• It is an opinion

• It can never be disproven

• It is often incomplete

• It is never debated

When a scientist repeats someone else’s experiment to see if the results are valid, it is called?

• Experimental method

• Scientific method

• Repetition

• Replication

Maria wants to graph the proportions of chemicals that make up salt water in the ocean. Which type of graph should she use?

• Circle graph

• Box and whisker plot

• Scatter plot

• Line graph

Every living thing is made up of cells. Robert Hooke is the scientist who discovered the cell in 1665 by observing them under a microscope. In order to understand cells, scientists use cell models to make observations. What is one reason why a cell model would be used?

• Cells are too dangerous to study without a model

• Cells are very small, and a model aids in its study

• Cells are too large to study in a lab

• Cells are too far away for scientists to study

Which graph is an excellent way to show how data changes over time?

• Bar graph

• Box and whisker plot

• Circle graph

• Line graph

Jeremy investigates how water affects plant growth. In week one, he measures the plant height with a meter stick. In week two, he measures the plant height with a tape measure. He then records the data in a data table. Jeremy then realizes there is a mistake in his procedure. Which claim describes what is wrong with his procedure?

• He conducted the experiment by himself

• Data should not be recorded directly into the data table

• The amount of water the plants were given

• He measured the plant height using two different methods

Hannah is rolling balls down a ramp. She wants to investigate how a ball’s mass affects the distance the ball rolls when it reaches the end of the ramp. Which variable must Hannah change during the experiment?

• The height of the ramp

• The mass of the balls used

• The speed of the balls

• The distance the balls roll