Middle School Science Quiz

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| By Susanalbarcha

Susanalbarcha

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1/10 Questions

Most energy on Earth comes from the

About This Quiz

The 'Middle School Science Quiz' assesses key concepts in general science, focusing on energy sources, forces, heat insulation, light reflection, and data understanding. It aims to enhance students' comprehension of fundamental scientific principles applicable in everyday situations.

2.

When an unbalanced force acts on an object, the force
- Is equal to the weight of the object
- Is cancelled by another force
- Does not change the motion of the object
- Changes the motion of the object
Correct Answer

A. Changes the motion of the object

Explanation

When an unbalanced force acts on an object, it changes the motion of the object. This means that the object will either start moving, stop moving, or change its speed or direction. An unbalanced force occurs when the forces acting on an object are not equal in magnitude and opposite in direction, causing a net force. This net force causes the object to accelerate or decelerate, resulting in a change in its motion.

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6
3.

Which of these actions will help keep your home the coolest in the summer?
- Opening and closing the fridge a lot
- Turning off the t.v., radio, games, computer, ect.
- Closing the shades or blinds over the windows
- Opening the windows during the day
Correct Answer

A. Closing the shades or blinds over the windows

Explanation

Closing the shades or blinds over the windows will help keep the home coolest in the summer because it blocks the direct sunlight from entering the house. Sunlight carries heat, so by closing the shades or blinds, less heat will enter the home, keeping it cooler.

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2
4.

Which material is best for insulating heat from cold?
- Wood
- Glass
- Iron
- Steel
Correct Answer

A. Wood

Explanation

Wood is the best material to use to separate heat from cold because it is a poor conductor of heat. This means that it does not easily transfer heat from one side to the other, making it an effective insulator. Wood has small air pockets within its structure that trap heat, preventing it from passing through. Additionally, wood has a low thermal conductivity compared to materials like glass, iron, and steel, further enhancing its ability to separate heat from cold.

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4
5.

You see your reflection in the mirror because light is
- Refracted
- Reflected
- Diffracted
- Absorbed
Correct Answer

A. Reflected

Explanation

When light hits a smooth surface, such as a mirror, it bounces back in a predictable manner. This phenomenon is known as reflection. When you look at yourself in the mirror, the light from your body reflects off the mirror's surface and enters your eyes, allowing you to see your reflection. Therefore, the correct answer is reflected.

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6.

Which of the following are not examples of data?
- Measurement
- Theories
- Quantitive observations
- Qualitative observations
Correct Answer

A. Theories

Explanation

Theories are not examples of data because they are explanations or models that are based on data. Data refers to the raw facts or information that is collected or observed, such as measurements, quantitative observations, or qualitative observations. Theories, on the other hand, are interpretations or explanations of the data, often used to understand or predict phenomena. They are derived from analyzing and interpreting the data, but they are not the data itself.

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7.

The measurement of the distance between two points on two waves is called wavelength.
- True
- False
Correct Answer

A. True

Explanation

The explanation for the given correct answer is that wavelength is indeed the measurement of the distance between two points on two waves. It is commonly used to describe the length of a wave, such as in light or sound waves. Wavelength is usually represented by the Greek letter lambda (λ) and is measured in units such as meters or nanometers. By measuring the distance between corresponding points on two waves, such as the distance between two crests or two troughs, we can determine the wavelength of the wave. Therefore, the statement is true.

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1
8.

Using one or more of your senses to gather information is called inferring.
- True
- False
Correct Answer

A. False

Explanation

It is called observing

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0
9.

When a new substance is formed with different properties unlike the original substance it is called a
- Chemical change
- Physical change
Correct Answer

A. Chemical change

Explanation

A chemical change occurs when a new substance is formed with different properties compared to the original substance. This change involves the breaking and forming of chemical bonds, resulting in a complete rearrangement of atoms. In contrast, a physical change only affects the physical properties of a substance, such as its shape, size, or state, without altering its chemical composition. Therefore, the correct answer is chemical change.

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10.

Which cell organelle is responsible for making proteins?
- Ribosomes
- Nucleolus
Correct Answer

A. Ribosomes

Explanation

Ribosomes are responsible for making proteins. They are small, spherical structures found either freely floating in the cytoplasm or attached to the endoplasmic reticulum. Ribosomes read the genetic information from the DNA and use it to assemble amino acids into proteins through a process called translation. This process is essential for the synthesis of all proteins in the cell, which play crucial roles in various cellular functions and structures. The nucleolus, on the other hand, is responsible for the production and assembly of ribosomes themselves, not proteins.

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3

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Mar 19, 2025

Quiz Edited by
ProProfs Editorial Team
Jan 05, 2013

Quiz Created by
Susanalbarcha

Middle School Science Quiz

Most energy on Earth comes from the

Quiz Preview

When an unbalanced force acts on an object, the force

Which of these actions will help keep your home the coolest in the summer?

Which material is best for insulating heat from cold?

You see your reflection in the mirror because light is

Which of the following are not examples of data?

The measurement of the distance between two points on two waves is called wavelength.

Using one or more of your senses to gather information is called inferring.

When a new substance is formed with different properties unlike the original substance it is called a

Which cell organelle is responsible for making proteins?