Worksheets4th Grade Review 1
Total questions: 25
Worksheet time: 13mins
Speaking tubes have been used on boats and in houses. A person speaks into one end of the speaking tube. Someone listens at the other end. Speaking tubes can be 90 meters long. They can be straight, bent, or curved. What design problem would speaking tubes best solve?
A person needs to be heard by someone far away or in another room
A person needs to be heard over loud noises in the background
A person needs to be heard by everyone in a large crowd
A person's voice needs to be much louder
2.)Marcos made an instrument by stretching two rubber bands around the nails on the board. Both of the rubber bands were exactly the same before they were stretched. When Marcos plucks the rubber bands, the rubber band that is stretched the tightest will most likely
Be quieter than the other rubber band.
Have a higher pitch than the other rubber band.
Not make any sound at all
Sound exactly the same as the other rubber band.
Which of the following sounds would be produced by fast, weak vibrations?
high-pitched, loud sound
low-pitched, soft sound
high-pitched, soft sound
low-pitched, loud sound
Julia did an experiment using drums. She compared the vibrations she felt and the pitch she heard listening to two different drums.Her data is shown in the table below.
Data From Drum Investigation
Type of Drum Vibrations Felt Pitch Heard
Bass Drum slower vibrations lower pitch
Snare Drum faster vibrations higher pitch
Which conclusion fits the data she gathered?
Faster vibrations make higher-pitched sounds.
Slower vibrations make higher-pitched sounds
The type of drum does not affect the pitch.
larger drums make higher-pitched sounds
What kind of vibration is required to create a low-pitched sound?
fast
slow
strong
weak
Light can pass through a stained glass window, but it is hard to see clearly through the colored glass.
Which word best describes the stained glass window?
translucent
reflective
transparent
opaque
In the picture a beam of light is shining on the water.What happens to the beam of light when it hits the water?
Most of the light is absorbed
Most of the light is reflected.
Most of the light is bent and redirected
Most of the light travels in the same direction.
Juan puts a pencil into a glass of water. The pencil appears to bend at the point where it enters the water. What causes the pencil to look bent?
The water in the glass absorbs incoming light waves so light cannot pass through the water.
The light waves traveling through the glass are reflected by the pencil when it is underneath the water.
The water in the glass changes incoming light waves into a different form of energy.
The light waves traveling through the glass are refracted as the waves pass from air to water.
Objects can be seen clearly through a glass surface because it transmits most of the light striking it. Glass is an example of a(n) _______ material.
transparent
opaque
invisible
translucent
magnifying glass makes use of the fact that light _______ when it travels from one medium to another.
is absorbed
moves in a straight line
is refracted
is reflected
Producers are organisms that use light energy from the Sun to make food. Which of the following is an example of a producer?
wolf
grass
mushroom
deer
Select each correct answer. More than one answer may be correct.
How do decomposers help an ecosystem?
Decomposers use sunlight to make food for an ecosystem.
Decomposers keep dead matter from "piling up" in an ecosystem.
Decomposers restore essential nutrients to an ecosystem.
A food chain is shown. In this food chain, _______ are producers.
trees
alligators
catfish
cicadas
A food chain is shown.Which of the following correctly describes one way that energy flows in this food chain?
Grasshoppers get energy directly from frogs.
Frogs get energy directly from herons.
Grasshoppers get energy directly from herons.
Frogs get energy directly from grasshoppers.
Looking at the graph below, what happens to the amount of food in an ecosystem when there are too many deer?
The amount of food stays the same.
The amount of food increases.
The amount of food becomes zero.
The amount of food decreases.
As a part of their science class project, Jennifer and Robby needed to build a terrarium. Mrs. Clark, their teacher, told them that a terrarium is an artificial ecosystem. The water, water temperature, plants, animals, air, light and soil all work together. Jennifer and Robby built the terrarium shown. Modified from image courtesy of NASA
If Jennifer and Robby forget to water the plants in the terrarium, what will happen to the animals that depend on the plants?
If the plants die, the animals that depend on them may die.
If the plants die, the animals that depend on them will start getting their energy from sunlight instead.
If the plants die, the animals that depend on them will not be affected.
If the plants die, the animals will learn to live without food.
A wildfire destroys most of the plant life in a forest. What would most likely happen to the animals that lived in the forest?
There would be fewer animals because there would be less food available.
There would be no animals because they would not be able to adapt to the changes.
There would be more animals because animals would not have to compete with plants for water.
There would be the same number of animals because they would be able to avoid the fire.
Kendra is hanging from the monkey bars on the playground. It gets harder and harder for Kendra to hold on. Then she falls to the ground. What force causes her to fall?
gravity
magnetic
friction
push
A soccer ball is at rest in the center of the field. If Julia kicks the ball to the right with a large force, what will happen to the ball?
The ball will not move at all.
The ball will begin to move to the left.
The ball will begin to move to the right.
The ball will move in a zigzag pattern.
Kyle and Jon are both pushing the same box. Kyle is pushing to the right. Jon is pushing to the left. Which of these would make the box move to the left?
Kyle pushes the box with more force than Jon.
Kyle and Jon both stop pushing the box.
Jon and Kyle push the box with the same amount of force.
Jon pushes the box with more force than Kyle.
A girl using a wheelchair needs to go up a ramp. She can choose a steeper ramp or a less steep ramp. Both ramps lead to the same place. Why is the less steep ramp more helpful than the steeper ramp?
Less work is needed to move up the ramp.
The direction of force needed to do the work is changed.
The height to which the person must travel is decreased.
Less force is needed to move up the ramp.
Brad is not strong enough to push a nail directly into a piece of wood. But he is strong enough to twist a screw of the same size into that wood. By twisting a screw instead of pushing a nail, Brad decreased the _______ he needed to use, but he increased the _______ over which he used it.
force; distance
twist; distance
energy; distance
distance; force
Forces can move in straight lines, and they can rotate in the path of a circle. Forces that follow the path of a circle are called rotational forces. Which simple machine takes a rotational force and changes it into a straight-line force?
a screw
an inclined plane
a wedge
all of these
Which term below refers to water that falls to the Earth in the form of rain, snow, hail, or sleet?
precipitation
transfiguration
evaporation
condensation
Which step of the water cycle is described below?
Water in the clouds falls to the Earth's surface as rain, sleet, snow, or hail.
precipitation
evaporation
refraction
condensation
