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Worksheets

Year 7 Half term refresh

Total questions: 50

Worksheet time: 33mins

Name
Class
Date
1.
Sound moves in a _________.
a)
Transverse wave
b)
Longitudinal wave
2.
How is sound produced?
a)
By the vibration of particles
b)
By the transfer of particles 
3.
Soft surfaces _______ sound waves. 
a)
Reflect
b)
Absorb
4.
________ describes how LOUD a sound is. 
a)
Amplitude
b)
Frequency 
5.

Sound is produced by something...

a)

echolocation

b)

vibrates

c)

vocal chords

6.

Some animals use this to navigate and hunt

a)

frequency

b)

ecolocation

c)

vibration

7.

How does an echo occur?

a)

sound travels faster than light

b)

sound bounces off solids

c)

sound is absorbed by solids

8.
Sublimation is
a)
when solid turns into gas
b)
when gas turns into plasma
c)
when liquid turns into gas
d)
when gas turns into solid
9.

Which state of matter does this picture show?

a)

Solid

b)

Liquid

c)

Gas

10.

What state of matter does this picture show?

a)

Solid

b)

Liquid

c)

Gas

11.

Which state of matter does this picture show?

a)

Solid

b)

Liquid

c)

Gas

12.

What is the best definition of temperature?

a)

How hot or cold something is

b)

A measure of how fast the molecules are moving in a substance

c)

How hot or cold something feels to a person

13.

As temperature increases, what happens to particles?

a)

They speed up

b)

They slow down

14.

As temperature decreases, what happens to particles?

a)

They speed up

b)

They slow down

15.
Which of the following are NOT found in animal cells
a)
chloroplasts and cytoplasm
b)
chloroplasts and cell wall
c)
cell wall and cell membrane
d)
mitochondria and nucleus
16.
If you were some bad guy trying to sneak into an animal cell, who would be there to stop you?
a)
nucleus
b)
mitochondria
c)
cell membrane
d)
cell wall
17.
Which of the following is the smallest unit of life that can carry out all life functions?
a)
the mitochondria
b)
the vacuoles
c)
the nucleus
d)
the cell
18.
What is the function of the cell nucleus found in both plant and animal cells?
a)
to produce energy
b)
to control cell activity
c)
to remove waste products
d)
to allow molecules to enter the cell
19.
In what part of the plant cell does the process of photosynthesis take place?
a)
nucleus
b)
mitochondria
c)
chloroplasts
d)
vacuoles
20.
What is the chemical symbol for the element hydrogen
a)
H
b)
He
c)
h
d)
he
21.
What is the chemical symbol for the element Silicon
a)
S
b)
Si
c)
si
d)
Sl
22.
What is the chemical symbol for the element Carbon
a)
ca
b)
co2
c)
C
d)
Cd
23.
What is the chemical symbol for the element copper?
a)
co
b)
c
c)
Cu
d)
cu
24.
What is the chemical symbol for the element Aluminum
a)
A
b)
AL
c)
Al
d)
al
25.
What is the chemical symbol for the element Nitrogen
a)
Ni
b)
N
c)
No
d)
Nb
26.
What is the chemical symbol for the element oxygen
a)
O
b)
Oxy
c)
ox
d)
Oy
27.
What is the chemical symbol for the element Silver
a)
S
b)
Si
c)
Au
d)
Ag
28.
What is the chemical symbol for the element Chlorine
a)
C
b)
Cl
c)
cl
d)
Ch
29.
What is the chemical symbol for the element Gold
a)
G
b)
go
c)
AU
d)
Au
30.
What is the chemical symbol for the element Iron
a)
I
b)
Ir
c)
Fe
d)
fe
31.

What type of charge does a proton have?

a)

negative

b)

postive

c)

no charge/neutral

32.

What type of charge does an electron have?

a)

positive

b)

no charge/neutral

c)

negative

33.

What is the center of the atom called?

a)

nucleus

b)

electron cloud

c)

energy level

d)

neutron

34.

What two sub-atomic particles belong in the nucleus of an atom?

a)

electrons and protons

b)

protons and neutrons

c)

electrons and neutrons

35.

What type of charge does a neutron have?

a)

negative

b)

positive

c)

no charge/neutral

36.

What is the atomic number of this Carbon atom

a)

6

b)

8

c)

14

d)

12

37.

What is the element name?

a)

Argon

b)

Neon

c)

18

d)

Ar

38.
Is water an element or a compound?
a)
Element
b)
Compound
39.
The properties of the elements that make up a compound are usually very similar to the compound itself.
a)
True
b)
False
40.
Water (H2O) freezing is an example of:
a)
A chemical change
b)
A physical change
41.
A compound consists of two or more elements bound together.
a)
True
b)
False
42.
Is Iron (Fe) an element or a compound?
a)
Element
b)
Compound
43.
How many elements are in HHe
a)
3
b)
4
c)
2
d)
5
44.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
45.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
46.
What is K?
a)
potassium
b)
berkelium
c)
sodium
d)
cacium
47.
How many elements are represented in the compound?
Na2CO3
a)
1
b)
2
c)
3
d)
4
48.
Does this picture show a compound?
a)
No
b)
Yes
49.
How many carbon atom/s are present in the compounds CaCO3?
a)
1
b)
2
c)
3
d)
4
50.
which one can be found on the periodic table
a)
Compound 
b)
Element

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