Worksheets8th Grade Science Questions
Total questions: 14
Worksheet time: 7mins
What safety equipment should be worn at all times while working with chemicals in thelaboratory?
apron
gloves
goggles
lab coat
You observe a dog chasing a ball. Which of the following is a valid hypothesis for this observation?
If a ball is thrown, then the dog will chase it
If a ball is thrown, then the dog will be happy
A dog always chases a ball in motion.
When you throw the ball the dog is happy.
What is one advantage and one limitation of using a model of an atom like the one pictured below?
One advantage is the model illustrates the different parts of the atom. One limitation is the model is not to scale.
One advantage is the model is to scale. One limitation is that the model does not illustrate the different parts of the atom.
One advantage is that the model materials accurately represent the substances in an atom. One limitation is the size of the model, since atoms cannot be seen by the naked eye.
One advantage is the model illustrates the relative masses of each part of the atom. One limitation is the model is not to scale.
Jackson is designing an experiment to test the temperature at different times of the day. For each trial, he plans to collect data for 15 minutes. What equipment will he need to implement this experiment?
Meter stick, spring scale, and test tube
Timing device, computer, and meter stick
Thermometer, timing device, and lab journal
Lab journal, timing device, and psychrometer
Determine if the following chemical equation satisfies the law of conservation of mass: C +S 8 --- 4 CS 2
It is not balanced. In order to support the law of conservation of mass the equation should read: 4 C + S 8 --- 4 CS 2.
It is balanced and it supports the law of conservation of mass; matter cannot be created or destroyed.
It is not balanced. In order to support the law of conservation of mass the equation should read: C + 2 S 8 --- 8 CS 2.
It is balanced and it supports the law of conservation of mass; energy cannot be created or destroyed
Which substance does the chemical formula Na2 S represent and how many atoms does it contain?
Sodium sulfide; 2
Sodium sulfide; 3
Nitrogen sulfide; 2
Nitrogen sulfide; 3
Which of the following is a measure of velocity?
A cheetah is running at a rate of 7 m/s
A bike is slowing at a rate of 1.5 m/s 2 to the east
A cat is walking at an angle of 60 degrees
A dog is running at a rate of 2 m/s to the east
Fred is pushing a desk with a force of 8.9 N to the left, while Kate is pushing the same desk with a force of 6.53 N to the right. What is the net force being applied to the desk and in which direction will it move?
15.43 N to the left
2.37 N to the left
2.37 N to the right
15.43 N to the right
Which season is each hemisphere experiencing in the picture below?
The northern hemisphere is experiencing spring while the southern hemisphere is experiencing fall.
The northern hemisphere is experiencing fall while the southern hemisphere is experiencing spring.
The northern hemisphere is experiencing winter while the southern hemisphere is experiencing summer.
The northern hemisphere is experiencing summer while the southern hemisphere is experiencing winter.
The Hertzsprung-Russell diagram below show the brightness and temperature of different stars. Based on the information in the diagram, what can you conclude about the White Dwarfs?
They are hotter than the Sun, but not as bright.
They are cooler than the Sun, and not as bright.
They are hotter and brighter than the Sun.
They are cooler and brighter than the Sun.
Which of the following is the best description of the Milky Way Galaxy?
A gigantic inter stellar cloud of dust, hydrogen, helium and other ionized gases that can measure light years across that contains our solar system.
A spiral-shaped system made up of billions of stars, as well as gas and dust, held together by gravitational attraction.
An object in the sky that contains our solar system and sends out its own light, generated by nuclear reactions at its center.
A planet that is covered by 71% water and 29% land. It has multiple ecosystems and supports multiple types of life, and is part of our solar system.
Based on the information illustrated in the weather map below, what type of weather should the people in Amarillo, TX be prepared to expect over the next 24 hours?
Cooler temperatures and no wind
Warmer temperatures and wind
Cooler temperatures and wind
Warmer temperatures and no wind
Which abiotic factors do humans need to survive?
Water and plants
Light and soil
Water and oxygen
Light and carbon dioxide
John is asked to identify predator/prey relationships using the food web below. Which of the following is NOT a predator/prey relationship?
Osprey are the predators and large piscivorous fish are the prey.
Tundra swans are the predators and sea ducks are the prey.
Wading birds are the predators and small planktivorous fish are the prey.
Bald eagles are the predators and sea ducks are the prey.
