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time and motion and electricty and its affects 7th grade

Total questions: 42

Worksheet time: 28mins

Name
Class
Date
1.

The distance covered by an object in a ________ is called as the speed.

a)

Unit time

b)

Unit length

c)

Position

2.

If an object keeps changing it's speed, then the motion is _______ .

a)
b)
c)
3.

The time taken by the pendulum to complete ________ is called it's

time period .

a)

Ten oscillations

b)

One oscillation

c)

Five oscillations

4.

The smaller units of time are ______ and _______ .

a)

kilometre , metre

(km) , (m)

b)

centimetre , millimetre

(cm) , (mm)

c)

centimetre , kilometre

(cm) , ( km)

5.

The basic unit of speed is__________.

a)

m/s

b)

m/hr

c)

km/hr

6.

Who invented the pendulum clocks?

a)

Galileo Galilie

b)

James Watt

c)

Albert Einstein

7.

Earlier time measuring instrument

a)
b)
c)
8.

_______ measures the speed and ________ measures the distance moved by the vehicle.

a)
b)
c)
9.

A simple pendulum consists of a _________ and thread suspended from a rigid stand.

a)
b)
c)
10.

To and fro motion of a simple pendulum

shows __________ .

a)
b)
c)
11.

The fact that the time period of a simple pendulum remains same is used in ............clock

a)

SUNDIAL

b)

SIMPLE

c)

PENDULUM

12.

In modern wrist watch , time is measured by the vibrations of a ................crystals

a)

Quartz

b)

Diamond

c)

GOLD

13.

The SI unit of speed

a)

m/s

b)

km/s

c)

km/hr

d)

m/hr

14.

SI unit if time

a)

hour

b)

minute

c)

seconds

15.

A distance time graph has distance as .............

a)

x and Y axis

b)

x axis

c)

Y axis

16.

When the ….……… .of the body moving in straight line is constant, it is in uniform motion

a)

speed

b)

distance

c)

road

17.

Speed = distance * time

a)

TRUE

b)

FALSE

18.

Speedometer measures distance

a)

True

b)

False

19.

time period of simple pendulum depends on

a)

mass of bob

b)

volume of bob

c)

length of pendulum

20.

1 m/s =

a)

18/5 km/hr

b)

5/18 km/hr

21.

What does a fuse do?

a)

Melt down for no reason.

b)

Stop electricity

c)

Stop excessive electricity

22.

What is this?

a)

Battery

b)

Electromagnet

c)

Soleoid

d)

Solenoid

23.

What are the effects of electricity?

a)

Chemical effect

b)

Magnetic effect

c)

Heating effect

d)

Illuminating effect

24.

What are incandescent bulbs?

a)

Bulbs with mercury vapour

b)

Bulbs tungsten filament

c)

Bulbs with light emitting diodes

25.

What is the full form of the ISI mark?

a)

Indian standard institution

b)

India standards institutions

c)

Indian Standards institution

26.

Who developed the ISI mark?

a)

Bureau of India standard

b)

Bureau Indian standards

c)

Bureau India standard

d)

Bureau of Indian Standards

27.

What kind of products contain ISI mark?

a)

Electrical appliances

b)

Switches,Motors,Wiring Cables

c)

Computers,Mobiles

28.

Electrons are____________particles

a)

Positive

b)

Negative

c)

Positively charged

d)

Negatively charged

29.

When two or more cells are joined together it forms a

a)

Dynamo

b)

Radio

c)

Transistor

d)

Battery

30.

When does an electromagnet lose its magnetic Property?

a)

When current is very high

b)

When its switched off

c)

When heat is very high

d)

When current is switched on

31.

What is an electromagnet based on ?

a)

Magnetic effect

b)

Electric current

c)

Magnetic effect of electric current

d)

Electro-chemical effect of current

32.
A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow? 
a)
The switch needs to be opened.
b)
The switch needs to be closed.
c)
The cell needs an insulator.
d)
The wire needs to be connected to the bottom of the cell.
33.
Which property of wood makes it a good material for the handle on a cooking tool? 
a)
Wood is a natural material. 
b)
Wood is unaffected by metal. 
c)
Wood conducts heat well. 
d)
Wood does not conduct electricity well.
34.
Mary-Alice likes to bring her coffee to work each morning.  However, she wonders what the best cup to bring would be if she wants her coffee to stay warm.  Which of the following materials would keep Mary-Alice’s coffee warm the longest? 
a)
paper
b)
Styrofoam
c)
 plastic
d)
 glass
35.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
36.
The continuous flow of electric charges through a material is called...
a)
Electric Field
b)
Electric Force
c)
Electric Current
d)
Electric Circuit
37.

What kind of circuits allow the movement of electrical energy?

a)

broken circuits

b)

short circuits

c)

open circuits

d)

closed circuits

38.
Circuits in your home, school, or other buildings are _____________ circuits.
a)
series
b)
parallel
c)
short
39.
What happens when the circuit is open?
a)
light bulb comes on
b)
device won't work
c)
static discharge
d)
lightning
40.
What happens when the circuit is open?
a)
light bulb comes on
b)
device won't work
c)
static discharge
d)
lightning
41.
In most electrical circuits, the pathway is made of:
a)
Wood
b)
Plastic
c)
Metal
d)
Static
42.

How was this quiz ?

a)

too good

b)

good

c)

okay ish

d)

bad

e)

very good

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