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Mr. L Science Review 4th grade

The capacity of a container is how much it can hold. The capacity our large Coke bottle, even if it is empty, is: 2 liters
The capacity of an eyedropper would be a few: milliliters
A milliliter of liquid is: a few drops
The volume of liquid in a graduated cylinder might be 50: milliliters
The volume of liquid in a beaker might be 300: milliliters
One thousand milliliters equals: one liter
A liter is close in volume to a: quart
An instrument used to measure mass is a: balance
The mass of a paperclip or a sheet of paper is about: one gram
The mass of a book could be about: one kilogram
1000 grams equal: one kilogram
Length and distance are measured in these metric units: meters
Volume of a liquid or capacity of a container is measured in these metric units: liters
Mass is measured in these metric units: grams
A centimeter is about as long as your: fingernail
If your fingernail is one centimeter long, how long is it in millimeters? ten
The distance from your waist to the floor could be about: one meter
One-hundred centimeters equals: one meter
One thousand meters equals: one kilometer
In an experiment to measure the how different types of soil affect tulip growth, you fill five identical pots with different types of soil and place a tulip bulb in each. The variable in the experiment is the: soil
The pots, tulip bulbs, water and amount of sunlight are should be the same for all of the pots. These are the: constants
Objects in motion have ______ energy. kinetic
Potential energy is ________ energy. stored
Due to the pull of gravity, the higher an object is off the ground, the more ____________ it has. potential energy
When I hold a ball in the air, it has potential energy. When I let go, the ball starts to fall. Potential energy changes to: kinetic energy
There are many forms of energy. Energy caused by the movement of electrons is: energy
Energy stored in food, batteries and fossil fuels like coal and gasoline is: chemical energy
Energy in moving or spinning objects like gears, car wheels, or joggers, is _______ energy: mechanical
Machines make work easier and help us work more: efficiently
A combination of two more simple machines is a: compound machine
Machines made of many compound machines are: complex machines
An object that is sharp, like a knife, ax, or nail, is a: wedge
Doorknobs, screwdrivers, and wheels of all sorts are: wheel and axles
A seesaw, crowbar, shovel, and nutcracker are: levers
A ramp, staircase, and ladder are: inclined planes
A jar lid and corkscrew are: screws
What simple machine is used to hoist a flag or raise window blinds? pulley
A wheelbarrow, scissors, and a bicycle are: compound machines
Simple machines with fulcrums (pivot points) are usually: levers
These simple machines have ropes or chains. pulleys
Two objects rubbing together create: friction
Friction resists or stops motion, and creates: heat
Unless acted on by a force, objects in motion tend to stay in motion and objects at rest remain at rest. This is the principal of: inertia
It's harder to push a real truck than a toy truck because objects with more mass have: more inertia
Which will light a bulb, an open or closed circuit? closed circuit
If your string of holiday lights goes dark when one little bulb burns out, the string of lights is a: series circuit
This circuit has more than one pathway for the flow of electrical current. If one bulb burns the others will remain lit. It is a: Parallel circuit
Electrical energy moves easily through materials that are: conductors.
Wires are usual made from ____ because it conducts electricity well. metal
Material like rubber, plastic and wood do not conduct electricity well. They are: insulators
Magnetism and _______ are very closely related. electricity
An electric current creates a magnetic field, and a magnetic field creates an _________ . electric current
If you wrap wire around a nail and run electricity through the wire, you have created an: electromagnet
If you rub your feet on the carpet, or rub a balloon on a wool sweater, you may create: static electricity
Static electricity occurs when negatively charged _____ are rubbed off of one surface and on to another. electrons
Benjamin Franklin learned that lightning was a form of electricity. What kind of electricity? static electricity
Who invented the light bulb? Thomas Edison
Which plant part takes in water and nutrients? root
Which part supports the plant and allows the movement of water and nutrients? stem
Which plant part makes food for the plant? leaves
The seed forms in the female reproductive part of the flower called the: pistil
Pollen forms on the ends of the male reproductive parts of the flower called the: stamen
The small leaves that form around the developing flower are the: sepals
Pollen is transferred from the stamen to the pistil in a process called: pollination
Most plants reproduce with seeds, but ferns and mosses reproduce with: spores
Green plants produce their own food in a process called: photosynthesis
Plants are green because of: chlorophyll
Many plants enter a period of ______ in the winter, which is similar to hibernation for animals. During this period most of their normal activities stop. dormancy
An organism's _____ provides food, water, shelter and space. habitat
All energy comes from _____ , and then cycles through the food webs to all of the animals in the community. sun
_______ get energy directly from the sun and use it to make food. Plants
Because plants produce their own food, they are called ___________ . producers
Organisms that get their energy from eating plants or other animals are called: consumers
All of the interrelated food chains in an ecosystem make up a: food web
Food chains and food webs always start with a: plant
The food chain starts with a producer (a plant) and ends with a: decomposer
Decomposers like ______ break down organisms and recycle them back to the nutrient pool. fungi
All of the living and nonliving things in an environment make up: ecosystem
The specific place an organism has in the food web is the organism's: niche
All organisms have _________ that allow it to survive in its environment. adaptations
Structural adaptations are __________ that help an organism survive, like long beaks, webbed feet, camouflage. body parts
The measure of the amount of heat energy in the atmosphere is: temperature
The amount of moisture in the air is: humidity
The weight of the air causes: air pressure
Air circulates around the Earth in big chunks called: air masses
Created by: PRO Teacher lit123