We tested the effect of water temperature on how fast a sugar cube dissolves. What was the dependent variable?

Time for Sugar cube to Dissolve

Adding HEAT to matter causes its particles to:

Move faster and closer together

Move slower and closer together

A student was asked to help pass out cups of hot chocolate to two other students. A teacher poured the steaming liquid into cups. Once cup was made of stainless steel and the other was made of thick plastic. As the student walked across the room, he suddenly put one of the cups on a desk and exclaimed "Ouch". Which cup did he put down and why?

He put down the steel cup because it was conducting thermal energy from the liquid to his hand.

He put down the plastic cup because the contents were spilling everywhere.

He put down the steel cup because it was insulating thermal energy from the liquid to his hand.

He put down the plastic cup because it was insulating thermal energy from the liquid to his hand.

A fifth grade class has collected empty cans for recycling. They have several large bins with aluminum and steel cans, all mixed together. The two types of can must be separated. Which of the following techniques could the students use to separate the two types of cans?

Use a magnet to find and remove the steel cans.

Put the cans in water, the steel cans with float.

Crush the cans, the aluminum cans will be a different shape.

Test the cans for their ability to conduct electricity.

Which statement is true?

Oil is the most dense substance.

Corn syrup is less dense than water.

Oil and corn syrup have the same density but different masses.

Two objects are placed in water. One sinks and the other floats. Which conclusion can be drawn from this data?

one object has a greater density than the other

one object is magnetic and the other is not

one object is solid and the other is a liquid

one object is much larger than the other

A metal spoon was left in a pot of boiling soup. The cook burned a finger by touching the spoon. Why did the finger get burned?

the metal spoon conducted heat to the cook's hand

The metal spoon chemically reacted with the cook's hand

the metal spoon conducted electricity to the cook's hand

Why are electrical wires usually covered with plastic?

to insulate the electrical wire

to make the wire more conductive

Anything that has mass and volume

8th Grade Science Accumulative Review

Authored by Coretta Pifer

Other Sciences, Biology, Chemistry

8th Grade

203 Questions

CCSS covered

Used 60+ times

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Content View

Student View

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the systematic study of natural events and conditions?

Psychology

Science

Math

Pseudoscience

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

To set aside your personal feelings, moods, and beliefs while you evaluate something.

Logic

Skepticism

Objectivity

Curiosity

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

To reason through information and make conclusions supported by the evidence

Logic

Skepticism

Objectivity

Careful Observation

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When you don't accept everything you hear or read immediately

Logic

Skepticism

Objectivity

Creativity

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a factor, usually being measured or observed, that responds to, or depends on, another factor.

Independent Variable

Dependent Variable

Controlled Variable

Hypothesis

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the reproduction of a scientific investigation by another person to ensure accuracy.

Replication

Repetition

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are making multiple sets (trials) of measurements or observations in a scientific investigation.

Repetition

Replication

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8th Grade Science Accumulative Review

What is the systematic study of natural events and conditions?

To set aside your personal feelings, moods, and beliefs while you evaluate something.

To reason through information and make conclusions supported by the evidence

When you don't accept everything you hear or read immediately

What is a factor, usually being measured or observed, that responds to, or depends on, another factor.

What is the reproduction of a scientific investigation by another person to ensure accuracy.

What are making multiple sets (trials) of measurements or observations in a scientific investigation.

What is the variable manipulated by the experimenter in order to study changes in the outcome variable?

What is a statement that can be tested scientifically through experiments and/or other scientific investigations.

We tested the effect of water temperature on how fast a sugar cube dissolves. What was the independent variable?

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