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WorksheetsU2 L2 Questions
Total questions: 22
Worksheet time: 11mins
Name
Class
Date
1.
The mechanical energy of the pendulum at the highest points equal .........
a)
kinetic energy only
b)
kinetic energy x potential energy
c)
potential energy only
d)
zero
2.
In home when the gas stove is working there is a change from ..............
a)
heat energy into a chemical one.
b)
chemical energy into a heat one.
c)
chemical energy into n sound one.
d)
light energy into a heat one.
3.
In the simple pendulum, there is an energy transformation from .............
a)
mechanical energy into a sound one
b)
mechanical energy into a light one
c)
potential energy into a kinetic one and vice versa
d)
kinetic energy into a heat one
4.
The changes of energy in the pendulum are similar to those occur in...............
a)
electric lamp
b)
dynamo
c)
electric bell
d)
children's swing
5.
Energy is neither created nor destroyed but it can be transformed into another form, this law is known as law of .............
a)
conservation of energy
b)
conservation of matter
c)
kinetic energy.
d)
Earth’s gravity
6.
In the filament of electric lamp, the .........
a)
Electric energy is converted into mechanical energy
b)
light energy is converted into heat energy
c)
electric energy is converted into heat energy
d)
chemical energy is converted into light energy
7.
in the car engine ..........
a)
A. the chemical energy changes into heat energy
b)
B. the heat energy changes into chemical energy
c)
C. the heat energy changes into mechanical energy
d)
D. (a) and (c) together
8.
When car lamps and radio cassette are on, there is a change inside the car battery from ...........
a)
chemical energy into a light one.
b)
chemical energy into a sound one.
c)
chemical energy into an electric one.
d)
electric energy into a light one.
9.
Electric energy is converted into kinetic energy in ............
a)
electric lamp
b)
cellular phone
c)
electric fan
d)
electric bell
10.
In the solar cells, the solar energy (sunlight) is directly converted into ............ energy
a)
kinetic
b)
light
c)
electric
d)
sound
11.
The role of technological applications is represented in ..........
a)
using energy resources and converting energy from a form to another.
b)
creating energy from nothing
c)
storing energy as its form is
d)
illustrating energy forms
12.
The potential energy of the pendulum = its mechanical energy - its kinetic energy
a)
true
b)
false
13.
When the pendulum reaches the maximum height, its potential energy is zero.
a)
true
b)
false
14.
The speed of the pendulum increases as it goes away from the rest position.
a)
true
b)
false
15.
The simple electric cell consists of a sugary solution and two similar metals are dipped in it.
a)
true
b)
false
16.
In the electric cell, the electric energy is converted into chemical energy.
a)
true
b)
false
17.
In car lamps, electric energy changes into light energy.
a)
true
b)
false
18.
Kinetic energy changes into electric energy in the sewing machine.
a)
true
b)
false
19.
Car exhaust and chemical pesticides cause electromagnetic pollution of air, water and soil.
a)
true
b)
false
20.
The networks of wireless transmitters of cellular phones cause electromagnetic pollution.
a)
true
b)
false
21.
in the nuclear reactor, nuclear energy changes into electric energy.
a)
true
b)
false
22.
Speed is the ability to do work or to make a change.
a)
true
b)
false
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