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Science Midterm Review

Total questions: 40

Worksheet time: 48mins

Name
Class
Date
1.

Which position of two magnets results in the greatest attraction between the magnets?

a)

1

b)

2

c)

3

d)

4

2.

The force of gravitational attraction between two objects depends on the distance between the objects and their

a)

temperatures

b)

buoyancies

c)

masses

d)

shapes

3.

The diagram below shows an inflated balloon attached to a straw that is moving along a string. Air is escaping from the open end of the inflated balloon. Some forces that are acting on the straw are shown by the four labeled arrows.

What causes the balloon to move along the string?

a)

force from escaping air

b)

friction between string and straw

c)

weight of balloon containing air

d)

force from string

4.

If you were pulling a wagon up a ramp, which force will decrease if the surface of the ramp is made smoother?

a)

magnetism

b)

gravity

c)

electricity

d)

friction

5.

The arrows in the diagram below represent the forces acting on a moving bicycle at two different times, time 1 and time 2. The length of each arrow represents the amount of force being applied.

As a result of the change in the forces from time 1 to time 2, the bicyclist will

a)

stop moving

b)

move faster in a forward direction

c)

move in a backward direction

d)

move slower in a forward direction

6.

The sequence of diagrams 1, 2, and 3 below represents different levers being used to lift a 100-newton (N) weight. The distance in meters (m) from the fulcrum to the applied force is different in each diagram.

How many meters from the fulcrum to the applied force would allow this weight to be lifted using

only 10 N of applied force?

a)

20

b)

10

c)

8

d)

4

7.
What equation do I use to calculate speed?
a)
S = D/T
b)
T = D/S
c)
D=TS
8.

Match the description to the graph:

"The car is stopped."

a)
b)
c)
d)
9.

Match the description to the graph:

"The car is traveling at a constant speed."

a)
b)
c)
d)
10.

Match the description to the graph:

"The car is coming back."

a)
b)
c)
d)
11.

The speed of a bus in this graph is:

a)

fast

b)

slow

c)

zero

d)

the speed of light

12.

In this graph,

a)

the bus is gradually speeding up (accelerating).

b)

the line is curved.

c)

the bus is gradually slowing down (decelerating).

d)

none of the above.

13.

At 60 seconds, how far had this object traveled?

a)

0 m

b)

10 m

c)

20 m

d)

40 m

14.
According to the label, how many calories in 1 serving come from protein?
a)
3
b)
12
c)
21
d)
27
15.

How many earths can fit in the Sun?

a)

10

b)

100

c)

1000

d)

1,000,000

16.
According to the label, how many calories are in two servings?
a)
230
b)
460
c)
400
d)
115
17.
Which statement is an inference about this picture?
a)
The van is tan.
b)
The  van ran into KFC. 
c)
The driver was hungry. 
d)
An ambulance may be on the way. 
18.
What is an observation for this picture?
a)
The man is scared
b)
The man is going to get eaten
c)
There is a man in a kayak
d)
The man is paddling fast
19.
Which of the following is an observation about this picture?
a)
The boy has fallen off his bike.
b)
The boy is in a lot of pain.
c)
The boy has injuries to his knees
d)
The boy learned his lesson about wheelies
20.
The girl does not want to eat her vegetables.
a)
Observation
b)
Inference
21.
They are in a hospital.
a)
Observation
b)
Inference
22.
There are 5 boys.
a)
Observation
b)
Inference
23.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
24.

If you double the mass of an object but apply the same force apply on it, the acceleration will __________________.

a)

double

b)

cut in half

c)

the same

d)

zero

25.

A 20 kg bike accelerates at 10 m/s2. What was the net force?

a)

25 Newtons

b)

20 Newtons

c)

200 Newtons

d)

10 Newtons

26.

Which type of force(s) will cause a change in an object's motion?

a)

gravity

b)

zero net force

c)

balanced forces

d)

unbalanced forces

27.

Newton's third law states that any action will have a(n) _______ and ______ reaction.

a)

Equal and similar

b)

Equal and opposite

c)

Equal and different

d)

Greater and opposite

28.
What is measured with a graduated cylinder?
a)

time

b)

distance

c)

weight

d)

liquid volume

29.
What is the maximum value this graduated cylinder can measure?
a)
1 ml
b)
10 ml
c)
25 ml
d)
50 ml
30.
What is the volume of the nail?
a)
15 mL
b)
16 mL
c)
1 mL
d)
2 mL
31.
Which of the following best describes a star?  A star is a celestial body ---
a)
composed of rock and metal with a very high density
b)
that is too big to be an asteroid, but too small to be a planet.
c)
that rotates on an axis and revolves around the Sun
d)
composed of gases that emit light due to nuclear reactions
32.
Based on this diagram which type of stars would belong to spectral class M and have the lowest luminosity?
a)
Main Sequence Stars
b)
Giants
c)
Super Giants
d)
White Dwarfs
33.
Use the Hertzsprung-Russell Diagram to answer the following question.  Betelgeuse is a _____
a)
Hot and Bright Star
b)
Cool and Bright Star
c)
Hot and Dim Star
d)
Cool and Dim Star
34.
As a whole, Giants are considered hotter than White Dwarfs.
a)
True
b)
False
35.
As a whole, Giants are considered hotter than White Dwarfs.
a)
True
b)
False
36.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
37.
Which category is our Sun located in?
a)
White Dwarfs
b)
Supergiants
c)
Main Sequence
d)
Giants
38.

The Sun is made of...

a)

Water and Ice

b)

Hydrogen

c)

Magnesium

d)

Hydrogen and Helium

39.

The Sun takes up 99.8% of the Solar System

a)

True

b)

False

40.
What is the outer layer of the sun's atmosphere?
a)
Photosphere
b)
Chromosphere
c)
Radiation Zone
d)
Corona

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