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WorksheetsScooby1
Total questions: 20
Worksheet time: 1hrs 19mins
With the use of the Hubble Space telescope, scientists recently discovered a giant runaway star. It is 90 times larger than the sun and is very hot and blue-white in color. Why does the sun appear to be brighter than the runaway star when viewed from earth?
The sun is a different color than the runaway star.
The sun is older than the runaway star.
The sun is closer to earth than the runaway star.
The sun is made of different elements than the runaway star.
A homemade car being pushed with a force of 25N. The force causes the car to move at a constant speed of 3 m/s. What will happen if the force is changed to 35N?
The car will move at a constant speed of 13 m/s.
The speed of the car will not change.
The speed of the car will increase.
The speed of the car will decrease by 1 m/s.
What is the difference between velocity and the speed of an object?
Velocity is the change in distance over time, while speed is the change in velocity over time.
Velocity has a direction associated with it, while speed has no specific direction.
Velocity has not direction associated with it, while speed has direction.
Velocity is the change in speed over time, while speed is the change in distance over time.
Based on the diagram, which type of stars would belong to spectral class M and have the highest luminosity?
Main Sequence stars
Giants
White Dwarfs
Supergiants
Imagine you were in charge of placing a detector aboard a satellite that will travel into deep space. Your first step is to analyze the electromagnetic spectrum, which is shown in the diagram. Which type of detector would you place on the satellite to study wavelengths coming from space that measure 10-4?
radio telescope
optical telescope
ultraviolet sensor
gamma-ray observatory
Which example best demonstrates Newton's first law of motion?
A child tries to push a sofa across the floor, but it will not move. His sister comes to help. Pushing together the children are able to move the sofa.
A child pushes two different sofas across the floor. He finds the light sofa is easier to push than the heavier sofa.
A child and his sister push on a sofa from opposite sides. They are equally strong, and the sofa does not move in either direction.
A child and his sister push two identical sofas across the floor in a race. His sister is stronger than he and she wins the race.
A golfer hits a golf ball with a club. The mass of the ball is 0.05 kg. The ball accelerates at 2,000 m/s2. What is the net force, to the nearest newton, that accelerates the ball?
1
10
100
1,000
Look at the list given. Which objects in the list experience an unbalanced force?
*A book sliding across a table at a constant speed.
*A ball sitting on a shelf.
*A can rolling down a ramp.
*A swing moving back and forth.
*A car traveling at a constant speed.
*A bird landing on a branch.
The book, the ball, and the car.
The ball, the car, and the bird.
The can, the swing, and the bird.
The book, the ball, the can, and the swing.
The Universe has many different components. Which list places four components of the Universe in the most likely order from smallest to largest?
planets, stars, galaxies, nebulae
nebulae, stars, planets, galaxies
galaxies, stars, planets, nebulae
planets, stars, nebulae, galaxies
Why does earth get more energy from the sun than from all other stars in the Universe combined?
The sun is much larger than the other stars.
The sun is much hotter than the other stars.
The sun is much more dense than other stars.
The sun is much closer than the other stars.
Radar sensors on high-altitude air craft and on space platforms such as the space shuttle have been used to produce 3-D maps of the Earth. These radar sensors use electromagnetic wavelengths that have the lowest energy. What type of electromagnetic radiation do these sensors use?
x-rays
ultra-violet
gamma rays
radio waves
A student graphed the position of a cart. Which statement best describes the cart?
The cart was stationary with a velocity of 0 m/s.
The cart was stationary except for a short burst of acceleration.
The cart moved at a constant velocity.
The cart decelerated at a constant rate.
Four students are asked to describe a nebula and a star. Here are their responses:
Student 1: A nebula is a collection of hot gases that produces light through nuclear explosions, while a star is a sphere of hot gases that contains many elements and undergoes fission that produces no light.
Student 2: A nebula is a collection of hot gases that results from stars exploding, while a star is a collection of gases from several nebulae that are not hot enough to cause nuclear fusion.
Student 3: A nebula is a collection of dust and gases that forms stars or results from dying stars, while a star is a sphere of matter with a temperature and density great enough to cause a nuclear reaction and produce light.
Student 1
Student 2
Student 3
None are correct
If a rocket ship's engine has a mass of 500 kg, and its net force is 0.10 N as it lifts off. Which expression can be used to find its acceleration?
0.10N
500 kg
0.10 N x 500 kg
500 kg
0.10 N
500 kg + 0.10 N
What is the formula to find net force?
Net force= distance/time
Net force= mass + acceleration
Net force= mass x time
Net force= mass x acceleration
What is the formula to find acceleration?
A=M/T
A=M/F
A=F/M
A=D/T
What exactly is acceleration?
speed up, slow down, or are stationary
speed up
slow down
increase speed, decrease speed, or change direction
If a girl is pushing a box across the floor with 15 N to the right, and a boy is pushing the same box 30 N to the left, what is the net force acting on the box, and what direction?
45 N to the left
10 n to the right
45 N to the right
15 N to the left
Two teams are competing against each other during tug-of-war. Team A is pulling at 80 N to the right. Team B is also pulling at 90 N to the left. Which team won and what was the net force?
Team A 17 N to the right
Team B 15 N to the right
team A 10 N to the left
Team B 10 N to the left.
The H-R diagram is a scatter plot based on what two criteria?
temperature and color
magnitude and color
luminosity and color
luminosity and temperature
