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CBA #1 23-24

Total questions: 46

Worksheet time: 2hrs 7mins

Name
Class
Date
1.

A student wanted to see how his toy car would roll on different types of flooring. He decided to roll the car on a tile floor, a wood floor, and a carpeted floor.

His investigation was designed to test the effects of which of the following forces?

a)

Friction

b)

Magnetism and friction

c)

Gravity

d)

Gravity and Magnetism

2.

This is an example of a

a)

Solution

b)

Mixture

3.

_____ is the movement of electrical charges.

a)

light energy

b)

sound energy

c)

chemical energy

d)

electrical energy

4.

On a warm sunny day, a turtle sits on a rock. Which term explains why the turtle feels the warmth from the sun?

a)

electrical

b)

light energy

c)

mechanical

d)

thermal energy

5.
What is an electrical circuit?
a)
lets you turn the energy on and off
b)
a closed path where where electricity flows
c)
stop electricity from flowing through
6.
A complete circuit has .......
a)
a motor in it
b)
a switch in it
c)
two bulbs in it
d)
no breaks in it
7.
A student began building a circuit to light a bulb.  What else does the student need to produce light?
a)
a battery that has energy
b)
a wire that is insulated
c)
a switch that is open
d)
another bulb of the same size
8.

Will the light bulb light up?

a)

YES

b)

NO

c)

Maybe?

d)

I have no idea...

9.

Will the light bulb light up?

a)

YES

b)

NO

c)

Maybe?

d)

I have no idea...

10.

Will the light bulb light up?

a)

YES

b)

NO

c)

Maybe?

d)

I have no idea...

11.

Will the light bulb light up?

a)

YES

b)

NO

c)

Maybe?

d)

I have no idea...

12.

Will the light bulb light up?

a)

YES

b)

NO

c)

Maybe?

d)

I have no idea...

13.

If you pour powdered drink mix into a glass of water, the drink mix will...

a)

evaporate

b)

melt

c)

dissolve

d)

turn into slime

14.

Salt can be separated from water using...

a)

tweezers

b)

magnets

c)

a filter

d)

evaporation

15.

True or False: A solution is a special type of mixture in which one substance dissolves into another. It is not easily separated.

a)

True

b)

False

16.

If you change the surface on which a toy car with wheels rolls, which effect is being tested?

a)

magnetism

b)

friction

c)

rotation

d)

electricity

17.
What form of energy is being used when a person pushes heavy boxes across the floor? 
a)
Electrical energy
b)
Mechanical energy
c)
Heat energy
d)
Sound energy
18.
A student created an electrical circuit, shown.

Which of the following statements is true about the circuit?
 
a)
The electrical circuit is working.
b)
The electrical circuit is open.
c)
The electrical circuit is complete.
d)
The electrical circuit is closed.
19.
A path followed by an electric current
a)
open circuit
b)
flow
c)
current
d)
circuit
20.
Which Cube has the greatest mass?
a)
Neither, They have the same mass
b)
The Red Cube
c)
The Blue Cube
d)
The green cube
21.
Which of these two objects (Pennies and Paper clips) have a magnetic property?
a)
Paper clips
b)
Pennies
c)
Both 
d)
Neither
22.
Choose the correct sentence.
a)
This circuit will work because it is an open circuit.
b)
This circuit will work because it is a closed circuit.
c)
This circuit will NOT work because it is an open circuit.
d)
This circuit will NOT work because it is a closed circuit.
23.
What form of energy is being used to push this shopping cart?
a)
mechanical energy
b)
thermal energy
c)
light energy
d)
sound energy
24.
Lemonade is an example of a...
a)
Mixture that can easily be separated.
b)
Delicious beverage.
c)
Solution that cannot easily be separated
25.
Heat is another name for-
a)
thermal energy
b)
magnetic energy
c)
electrical energy
d)
mechanical energy
26.

Which of the four blocks shown above has the greatest

mass?

a)

Block A

b)

Block B

c)

Block C

d)

Block D

27.

Ali wants to make lemonade on a hot summer day. Before adding lemon juice, he mixes hot water, ice, and sugar in a large container. What did Ali make?

a)

A compound

b)

An element

c)

A solution

d)

A suspension

28.

In the diagram, which wires complete the circuit that makes the bell ring?

a)

Wires 1,2, and 3

b)

Wires 1,2,3, and 4

c)

Wires 2,3, and 4

d)

Wires 2,3,4, and 5

29.

Fruit salad is a...

a)

Mixture

b)

Solution

c)

Both

d)

Neither

30.

Which mixture is a solution?

a)

Sand and water

b)

Sugar and water

c)

Wood and water

d)

Iron filings and pepper

31.

Thermal energy is energy that comes from the temperature of a heated substance or object. Which of the following is NOT true?

a)

Thermal energy can transfer from one object to another

b)

Thermal energy can cause a change in state of matter

c)

Human use their eyes to see thermal energy

d)

An example of thermal energy is boiling water

32.

This soup is a solution.

a)

True

b)

False

33.
A solution is a mixture of one or more substances _________ evenly into another substance.
a)
dissolved
b)
evaporated
c)
carried
d)
split
34.
A _____________________ is a type a mixture where the substances are evenly distributed throughout the mixture.
a)
solution
b)
solvent
c)
solute
d)
mixture
35.
What is true of mixtures?
a)
They taste good
b)
They are always solids
c)
They can not be separated easily.
d)
They can be separated physically easily.
36.

Which of the following materials are used to cover electrical wires for safety purposes because it is an insulator of electrical energy?

a)

Copper

b)

Aluminum

c)

Iron

d)

Rubber

37.

All of the objects below are conductors of electricity EXCEPT-

a)

An aluminum nail

b)

A rubber band

c)

A copper penny

d)

A steel fork

38.

Students design a circuit to test electrical conductivity. Which of the following will allow energy to flow through the circuit?

a)

wood

b)

glass

c)

copper

d)

plastic

39.

Which items in the classroom convert electrical energy to thermal energy

a)

hot plate

b)

glue stick

c)

stapler

d)

telephone

40.

What is NOT an example of gravity?

a)

falling out of your chair

b)

an orange falling from a tree

c)

throwing a ball up

d)

dropping trash into the trash can

41.

Which of these actions involves friction?

a)

a skateboard riding on the road

b)

dropping your pencil on the floor

c)

punting a soccer ball

d)

vacuuming the carpet

42.

_____________ is liquid changing from a gas to a liquid

a)

evaporation

b)

condensation

43.

_____________ is water changing from a liquid to a gas

a)

evaporation

b)

condensation

44.

What happens when I put liquid water in the freezer?

a)

it disappears

b)

it changes from a liquid to a solid

c)

it changes from a solid to a liquid

d)

it melts

45.

When I leave my chocolate bar outside in the sun it melts. This means it changes from a ...

a)

chocolate bar to a vanilla bar

b)

chocolate bar into ice cream

c)

chocolate bar into a skittle

d)

solid to a liquid

46.

Fresh water is a great conductor. Saltwater is a great conductor also. True or False?

a)

true

b)

false

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