Cohesion,Acids, Equations
Which statement correctly describes the forces that cause water to have the property of cohesion?
A. Water molecules are attracted to each other.
B. Water molecules are repelled by each other.
C. Water molecules are attracted to molecules on the surface of a material.
D. Water molecules are repelled by molecules on the surface of a material.
A. Water molecules are attracted to each other.
What is the formula for Accleration?
A=F/M
What is the difference between a radio wave, Visible Lights Wave and a gamma ray wave?
Radio has Longer Wave Lower Frequency
Visible Light has a shorter wave than radio but a longer wave that gamma ray and is the only wave we can see. Colors are in order from ROYGBIV
Gamma Rays have the shortest wave and the higher frequency
What is the temperature on the left side of the HR Diagram?
Hotter
Analyze the diagram of winds and currents on Earth.
Which occurrence is the source of energy driving these winds and currents?
A. the Coriolis effect
B. the rotation of Earth
C. the gravitational pull of the moon
D. the uneven heating of Earth by the sun
A. the Coriolis effect
Which statements describe real world examples of the adhesion of water? Circle TWO correct answers.
A. Ice cubes float in a glass of ice water.
B. Rain drops stick to a leaf after a storm.
C. Warm air can hold more water vapor than cold air.
D. Water droplets form beads on a spider’s web.
E. An insect called a water strider can walk on the surface of water.
B. Rain drops stick to a leaf after a storm.
E. An insect called a water strider can walk on the surface of water.
A cart is moving with an acceleration of 3.0 m/s2. A constant force of 90 N is acting on the cart in the same direction as its acceleration. What is the mass of the cart?
A. 90 kg
B. 30 kg
C. 270 kg
D. 2.5 kg
B. 30 kg
Examine the diagram of the electromagnetic spectrum. What relationship, if any, do you notice between the frequency of a wave and its wavelength?
A. As frequency increases, wavelength decreases.
B. As frequency increases, wavelength increases.
C. There is no relationship.
A. As frequency increases, wavelength decreases.
What is the temperature and luminosity of our sun using an HR diagram?
Medium temp
Medium Brightness/Luminosity
All forms of precipitation are weather events involving the hydrosphere. Which change to the air can lead to precipitation?
A. cold, dry air rising
B. cold, dry air falling
C. warm, moist air rising
D. warm, moist air falling
C. warm, moist air rising
After putting on lab gloves and goggles, students were given two unmarked solutions and told that onewas a strong acid and the other a strong base. Which test results would help the students identify one of the solutions as a strong base?
Circle the letters of the THREE correct answers.
A. a pH measurement of 2.0
B. a pH measurement of 9.5
C. turned litmus paper dark red
D. turned litmus paper dark blue
E. slippery feel of diluted solution
B. a pH measurement of 9.5
D. turned litmus paper dark blue
E. slippery feel of diluted solution
If I pushed a cart that has a mass of 30 kg with a constant force of 90 N how fast would it accelerate?
A. 4.0 m/s2
B. 3.5 m/s2
C. 3.0 m/s2
D. 2.5 m/s2
C. 3.0 m/s2
Which of the following EM waves are more energetic than visible light? Select all that apply.
A. UV rays
B. gamma rays
C. infrared rays
D. microwaves
A. UV rays
B. gamma rays
Three Main evidences for the origin of the universe?
Hydrogen & Helium
Microwave Radiation - Remnant/Crumbs
Redshift/Blueshift
Why is the air in most regions along the equator less dense than the air at other latitudes?'
A. The air at the equator is less dense because it mixes with air from other latitudes.
B. The air at the equator is less dense because it is warmer than the air at other latitudes.
C. The air at the equator is less dense because it is cooler than the air at other latitudes.
B. The air at the equator is less dense because it is warmer than the air at other latitudes.
This question has two parts. First answer Part A. Then answer Part B.
A chemist mixed hydrogen gas (H2) with oxygen gas (O2) in a laboratory. The gases reacted to form water (H2O). The chemist claimed that mass was conserved in the chemical reaction.
Part A
Which chemical reaction supports the claim that mass is conserved?
A. H2 + O2 → H2O
B. 2H2 + O2 → 2H2O
C. 2H2 + 2O2 → 2H2O
D. H2 + 2O2 → H2O2
Part B
Which statement BEST supports the answer
to Part A?
A. The mass of water produced is equal to the mass of hydrogen gas used.
B. The number of molecules of hydrogen gas equals the number of molecules of water.
C. The number of hydrogen and oxygen atoms on both sides of the reaction are equal.
D. The mass of water produced is equal to the mass of oxygen gas used.
Part A: B. 2H2 + O2 → 2H2O
Part B: C. The number of hydrogen and oxygen atoms on both sides of the reaction are equal.
Krista is playing tennis at the park. When the tennis ball flies toward her, Krista hits the ball with her racket, which causes the ball to fly in the opposite direction.
According to Newton's third law of motion, which of the following is true?
A. When the racket hits the tennis ball with a force, the tennis ball applies an equal but opposite force to the racket.
B. When the racket hits the tennis ball with a force, the ball applies an equal force in the same direction as the racket's force.
C. When the racket hits the tennis ball with a force, the ball applies a much weaker force in the opposite direction of the racket's force.
D. When the racket hits the tennis ball with a force, the ball does not apply any reaction force to the racket.
A. When the racket hits the tennis ball with a force, the tennis ball applies an equal but opposite force to the racket.
What is the order of visible light?
ROYGBIV
Where are we located?
The name of our galaxy
The Type of Galaxy
Precise Location
Name of the Precise Arm
The Spiral, Milky Way Galaxy, In one of the spiral arms known as the Orion arm.
Which Continent coast would encounter the most hurricanes?
Africa
Cu + 2AgNO3 → 2 Ag + Cu(NO3)2
Which elements AND what number of atoms are involved in the reaction?
Does this equations show the law of conservation?
Cu=1 Cu=1
Ag=2 Ag=2
N=2 N=1
O=6 O=6
The equation is balanced!
Daniel applies a constant force of 10 N to a ball with a mass of 18 kg. In his first investigation, he puts a piece of tape on the floor to show how far the ball rolled in 1 second. Daniel wants to do a second investigation to make a ball roll a shorter distance in 1 second than the distance the first ball rolled.
Which TWO actions could he take that would achieve this result?
A. Roll a ball of the same mass as in the first investigation down a ramp.
B. Apply a 5 N force to a ball of the same mass as in the first investigation.
C. Apply the same amount of force as in the first investigation to a 3 kg ball.
D. Apply a 25 N force to a ball of the same mass as in the first investigation.
E. Use a 25 kg ball and apply the same amount of force as in the first investigation.
B. Apply a 5 N force to a ball of the same mass as in the first investigation.
E. Use a 25 kg ball and apply the same amount of force as in the first investigation.
What is the order of the EMS from Longest to Shortest?
Raging-Radio
Martian-Microwaves
Invaded-Infrared
Venus-Visible Light
Using-Ultraviolet
X-Ray-X-Ray
Guns-Gamma Ray
What is the life cycle of a low/high mass star?
Low Mass High Mass
1) Nebula/Protostar 1) Nebula/Protostar
2)Main Sequence 2)Main Sequence
3) Red Giant3) Red Super Giant
4) Planetary Nebula 4)SuperNova
5) white Dwarf 5) Neutron Star
6) Black Dwarf 6) Black Hole
Name all the items needed to cause a hurricane
Location
Latitude (Where on Globe)
Pressure
Air
Water
Curve Winds Phenomenon
Ocean
Equator
Low
Warm
Warm
Coriolis Effect