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WorksheetsDA 1 Review
Total questions: 25
Worksheet time: 3hrs 55mins
Name
Class
Date
1.
Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to Student 2.
If the force of friction resisting the student’s push is 4 N, what is the net force acting on the board?
If the force of friction resisting the student’s push is 4 N, what is the net force acting on the board?
a)
4 N
b)
6 N
c)
10 N
d)
14 N
2.
The graph below shows the motion of a ball rolling on a straight track.
What was the ball’s average speed during the time represented in the graph?
What was the ball’s average speed during the time represented in the graph?
a)
.2 m/s
b)
.5 m/s
c)
5.0 m/s
d)
10.0 m/s
3.
The list includes six situations.
• A book sliding across a table at a constant speed
• A ball sitting on a shelf
• A can rolling down a ramp
• A swing moving back and forth
• A car traveling at a constant speed of 15 m/s
• A bird landing on a branch
Which objects in the list experience an unbalanced force?
• A book sliding across a table at a constant speed
• A ball sitting on a shelf
• A can rolling down a ramp
• A swing moving back and forth
• A car traveling at a constant speed of 15 m/s
• A bird landing on a branch
Which objects in the list experience an unbalanced force?
a)
The book, the ball, and the car
b)
The ball, the car, and the bird
c)
The can, the swing, and the bird
d)
The book, the ball, the can, and the swing
4.
Deep Space 1 was a spacecraft powered by an engine that gave off xenon particles to change velocity. It had a mass of 500 kg. Which expression can be used to find the spacecraft’s acceleration if its engine created a net force of 0.10 N?
a)
.10N / 500 kg
b)
500 kg x 0.10 N
c)
500 kg / .10 N
d)
500 kg + 0.10 N
5.
The drawing shows two identical airplanes at an air show. The airplanes are flying at the same speed. Airplane W is flying 50 m higher than Airplane X.
Which statement best describes the energy of the two airplanes?
Which statement best describes the energy of the two airplanes?
a)
Airplane W has a greater kinetic energy than Airplane X.
b)
The two airplanes have the same gravitational potential energy but different kinetic energies.
c)
Airplane X has more gravitational potential energy than Airplane W.
d)
The two airplanes have the same kinetic energy but different gravitational potential energies.
6.
Four students were asked to name the parts of an atom that determine the atom’s identity and chemical properties. The students’ responses are shown in the table below.
a)
Student 1
b)
Student 2
c)
Student 3
d)
Student 4
7.
A hobbyist collected data about the motion of a toy train on a straight track and then recorded the data in the graph below.
Which of these accurately describes the motion of the toy train?
Which of these accurately describes the motion of the toy train?
a)
The toy train speeds up while going forward and then slows down.
b)
The toy train slows down while going forward and then moves backward.
c)
The toy train moves forward at a constant speed, slows down, and then stops.
d)
The toy train moves forward at an increasing speed, stops, and then moves forward.
8.
See the image for the question.
a)
2
b)
3
c)
4
d)
8
9.
During a lab investigation, students added four 50 g masses to two boxes and arranged the boxes so that they were motionless on a pulley, as shown in the diagram. The students then followed the procedure described in the box. The students recorded their observations after each procedure and reset the pulley system to the original conditions.
a)
Procedures 1, 2, and 3
b)
Procedures 4 and 5
c)
Procedures 3 and 4
d)
Procedures 1, 3, and 5
10.
A clerk at a hardware store performed the activities in the list.
Which statement best describes the amount of work performed for the three activities?
Which statement best describes the amount of work performed for the three activities?
a)
Activity 3 required more work than Activity 1, but Activity 3 did not require more work than Activity 2.
b)
Activity 1 required the same amount of work as Activity 3.
c)
Activity 2 required the most work.
d)
Activity 1 was the only activity that required work.
11.
A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?
a)
The chemical energy stored in the match changed to thermal energy and light energy.
b)
The thermal energy stored in the match changed to light energy and chemical energy.
c)
The light energy and thermal energy stored in the match changed to mechanical energy.
d)
The light energy and thermal energy stored in the match changed to chemical energy.
12.
Nitrogen dioxide is a gas that can be generated by emissions from vehicles and factories. It can also be generated by natural sources, such as forest fires, lightning, and microbial activity in soil. The equation for producing nitrogen dioxide is shown below.
Which of these provides evidence that a chemical reaction occurs?
Which of these provides evidence that a chemical reaction occurs?
a)
A gas is present.
b)
The total number of atoms remains unchanged.
c)
The state of matter remains the same.
d)
A brown gas is produced.
13.
A student graphed the position of a cart during a 7-second time interval.
Which statement best describes the cart?
Which statement best describes the cart?
a)
The cart was stationary with a velocity of 0 m/s for the entire 7 seconds.
b)
The cart was stationary except for a short burst of acceleration of 0.5 m/s2.
c)
The cart moved at a constant velocity of 0.5 m/s for the entire 7 seconds.
d)
The cart accelerated at a constant rate of approximately 0.8 m/s2 .
14.
A golfer hits a golf ball with a club. The mass of the ball is 0.05 kg. The ball accelerates at 2,000 m/s2. What is the net force, to the nearest newton, that accelerates the ball?
a)
50
b)
1000
c)
100
d)
500
15.
How many protons, neutrons, and electrons are present in an atom of hafnium, Hf, with a mass number of 178?
a)
72 protons, 178 neutrons, 106 electrons
b)
72 protons, 106 neutrons, 72 electrons
c)
178 protons, 250 neutrons, 72 electrons
d)
106 protons, 72 neutrons, 106 electrons
16.
The table shows the chemical formulas for four substances.
Which substances have the same number of carbon atoms?
Which substances have the same number of carbon atoms?
a)
Substances 1 and 2
b)
Substances 2, 3, and 4
c)
Substances 2 and 3 only
d)
Substances 1 and 3
17.
Tin, Sn, is a soft white metal. It has a low melting point compared with other metals. Tin is widely used as a coating for cans of food. Which statement accurately describes atoms of tin?
a)
Tin atoms have 50 protons.
b)
Tin atoms have five valence electrons.
c)
Tin atoms have 119 neutrons.
d)
Tin atoms have 68 electrons.
18.
An athlete is trying to lift some weights. He successfully lifts 200 N weights, but when he tries to lift 400 N weights, he is unsuccessful.
Which of these correctly compares the amount of work the athlete does on the weights?
Which of these correctly compares the amount of work the athlete does on the weights?
a)
The athlete does no work on either the 200 N weights or the 400 N weights.
b)
The athlete does no work on the 200 N weights but does work on the 400 N weights.
c)
The athlete does work on both the 200 N weights and the 400 N weights.
d)
The athlete does work on the 200 N weights but does no work on the 400 N weights.
19.
The atoms of a certain element each contain 11 protons and 1 valence electron. Which statement correctly identifies this element and describes its chemical reactivity?
a)
The element is sodium, and it is highly reactive.
b)
The element is fluorine, and it is not very reactive.
c)
The element is sodium, and it is not very reactive.
d)
The element is fluorine, and it is highly reactive.
20.
A bus travels 20 km in 30 minutes. What is the average speed of the bus?
a)
20 km/h
b)
30 km/h
c)
40 km/h
d)
50 km/h
21.
During a demonstration of Newton’s laws of motion, a student used the setup shown in Figure 1. The student flicked the index card with a fingertip, and the coin fell straight down into a plastic cup as shown in Figure 2.
Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?
Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?
a)
The coin was at rest until the card was removed, so it tended to remain in the same location. Once the card was gone, the unbalanced force of gravity caused the coin to fall.
b)
Moving the card applied an action force on the coin. Since the card was gone, gravity applied a reaction force on the coin.
c)
The card had less mass than the coin, so a smaller force of gravity acted on the card. The larger force of gravity on the coin made it fall.
d)
The acceleration of the coin falling into the cup was equal and opposite to the acceleration of the card.
22.
All the following reactions are correctly balanced except —
a)
2C2H2 + 5O2 → 4CO2 + 2H2O
b)
4Fe + 3O2 → 2Fe2O3
c)
NaHCO3 → Na2CO3 + H2O + CO2
d)
2CH3OH + 3O2 → 2CO2 + 4H2O
23.
The periodic table is organized into groups and periods of elements. The characteristics of a certain group of elements are listed below.
Which of these elements is in this group?
Which of these elements is in this group?
a)
Lithium
b)
Strontium
c)
Aluminum
d)
Silicon
24.
Which of these formulas contain equal numbers of nitrogen atoms?
a)
Formulas I and III
b)
Formulas I and IV
c)
Formulas II and III
d)
Formulas I, II, and V
25.
A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s2?
a)
18.0
b)
6.48
c)
60.8
d)
11.4
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