Grade 7 Midterm review

What term describes a broad explanation that is widely accepted because it is supported by a great deal of evidence?

• observation

• hypothesis

• theory

• law

Which of the following would be an example of qualitative data?

• 10 petals on the rose

• thirteen degrees Celsius

• bright, red roses on the bush in front of the house

• the dog has an eleven-centimeter long tail

Which of the following is an example of a system?

• a group of copper wires

• a stick

• an organism

• an apple

What are the steps commonly used by scientists to gather information to test a hypothesis and solve problems?

• observational research

• pure science

• scientific method

• applied science

Hahn wanted to know how fast his friend Minh would respond to different sounds. What is the independent variable in this experiment?

• different sounds

• Hahn

• how fast Minh reacted

• playing the radio louder and louder

Hahn wanted to know how fast his friend Minh would respond to different sounds. What is the dependent variable in this experiment?

• different sounds

• Hahn

• how fast Minh reacted

• playing the radio louder and louder

How do scientists test a hypothesis?

• by designing models

• by formulating questions

• by doing controlled experiments

• by communicating results

What particles are in the nucleus of an atom?

• protons and electrons

• only protons   

• neutrons and protons

• electrons and neutrons

What is the goal of science?

• gather information to put into a textbook for students to learn

• understand how and why things happen

• always be right

• find a problem and fix it

What is the factor in an experiment that is being measured?

• control

• dependent variable

• independent variable

• theory