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5th grade Science (Force and Motion)

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created 5 years ago by mgort
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updated 5 years ago by mgort

Grade levels:
5th grade

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1

air resistance

is the friction between an object and particles in the air.

2

average speed

is determined by dividing the trip distance by the total time of the trip.

3

balanced forces

exist when all the forces acting on an object result in the object staying at rest or moving at a constant speed in the same direction.

4

contact force

is a push or a pull that touches or comes in contact with an object to change motion.

5

direction

is the path along which something moves, lies, or points. Some direction terms are: right, left, north, south, up, down, etc.

6

distance

is a measurement of how far from each other two points or places are.

7

effort force

is the force exerted by the user on the simple machine.

8

electromagnet

is produced when electricity flows through a wire. Coiling a wire around an iron bar increases the strength of the magnetic field.

9

force

is a push or a pull on something.

10

force on a load

is the force exerted by the simple machine on the load. All simple machines involve a force on the load and an effort force.

11

friction

is a force that acts on an object when it rubs against another object or material.

12

fulcrum

is the fixed point on which the lever moves.

13

graph

is a representation of data plotted on an x-axis and y-axis.

14

gravity

is a force where one object pulls on another object.

15

inclined plane

is a simple machine made with a flat slanted surface.

16

instantaneous speed

is how fast an object moves at a certain point in time.

17

lever

is a bar that tilts around a fixed point to produce a useful motion.

18

load

is the object to be moved by the simple machine.

19

mass

is the measure of the amount of matter in an object.

20

motion

is the changing of position of an object.

21

newton

is a metric unit used to measure the force applied to objects.

22

non-contact force

is a push or a pull that does not touch an object to change motion.

23

point of reference

is a background or non-moving object in the background used in describing the motion of another object.

24

pulley

is a simple machine that is made up of a wheel with a groove in it.

25

screw

is a simple machine that is an inclined plane wrapper around a rod or core.

26

simple machine

is a device that makes a job easier to do by changing the amount of force, the direction of a force, or the distance through which a force moves.

27

speed

is the measurement of how fast an object travels from one point to another.

28

spring scale

is used to measure the approximate weight, or the pull of gravity, on an object.

29

time

is the measurement of the period between events or how long it takes an object to move from one place to another.

30

unbalanced forces

exist when all the forces acting on an object result in a change of motion of the object. If it was at rest, it begins to move. If it is moving, it changes speed or changes direction.

31

variables

are the properties of things that can change, be changed, or vary in an investigation. Some examples are time, distance, and temperature.

32

wedge

is a simple machine that helps cut or split objects.

33

weight

is the measure of the amount of gravity pulling on an object.

34

wheel and axle

is a simple machine that has a center rod that is attached to a wheel.