A car travels at a speed of 72 miles per hour. What distance does the car travel in two hours? (speed = distance ÷ time)
144
Explain why burning wood is a chemical change
New subsatnce
How is it possible for single-celled organisms to survive?
Everything in one cell
Explain why melting ice is a physical change instead of a chemical change
Same substance, different state
A car traveled 480 km in eight hours. How far did the car travel in three hours?
180 km
Katie has blue eyes. If Katie’s mom has green eyes, what is most likely true about the color of Katie’s dad’s eyes?
dad has blue eyes
Billy rolls a toy truck filled with marbles across the kitchen floor. He then dumps the marbles before rolling it back to his starting location. How would the speed of the truck most likely change on the way back?
Increase due to less mass
Which two human body systems are MOST responsible for getting oxygen to cells?
circulatory and respiratory
Ivy mixed 30 g of hot chocolate mix with 200 g of hot milk. She then added 5 marshmallows with a mass of 8 g each. Which best describes the mass of her hot chocolate?
270 g
Bob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?
1100 grams
What kind of force do brakes use to stop a moving bicycle?
friction
Which of the following body systems is responsible for producing heat?
muscular
Which type of change occurs when the size, shape, appearance, or volume of a substance is changed without changing its composition?
Physical
Which of the materials would be the best conductor of heat?
Metal
Which body system sends electrical signals to all other body systems?
nervous
Which body system’s main purpose is to help the body move?
muscular
John put a heat pack on his cold feet. What will most likely be the result?
Heat from pack to cold feet
In the winter, the air pressure has been decreasing over several days. Which weather will most likely occur?
Snow
While riding his bike, Dawson starts to notice his face and shoulders beginning to burn. How is this most likely occurring?
Radiation
Kim lost her hammer outside. When she found it a few months later, some parts of the metal were covered with flaky, brown rust. Which type of change occurred when rust formed on the hammer?
Chemical
What role does the circulatory system provide to the digestive system?
transports nutrients
Chris climbs onto a skateboard ramp halfway between the top and the bottom of the ramp. Because gravity acts on Chris, which is most likely to happen?
roll down ramp
What happens to metal railroad tracks during the heat of a summer day?
Expand, increase in length
Which factor determines whether precipitation will be in the form of rain or snow?
Temperature
How does heat energy from the Sun reach Earth?
Radiation
Aliyah observes the air pressure daily. Over the last couple of days the air pressure has been increasing. What weather will Aliyah most likely observe as a result?
Clear, Cool, Sunny
Compare low- and high-pressure weather systems
Low Pressure-Lousy/Rain High Pressure-Happy/Sunny
The local weather forecaster says a low-pressure system will enter North Carolina. Which type of weather will the low-pressure system most likely bring?
Rain/Storms
How long will it take a car that is moving at 30 miles per hour to travel 270 miles? (speed = distance ÷ time)
9 hours
How is a plant different from bacteria?
Multicell-plants Unicellular-bacteria
Which are examples of inherited traits? A. specific beliefs B. fingerprints C. memories D. nose shape
nose shape
Which is NOT an inherited trait in humans? A. blue eyes B. long fingers C. calloused hands D. attached earlobes
calloused hands
A car takes 4 hours to travel 120 miles at a constant speed. How fast is the car traveling? (speed = distance ÷ time)
30 mph
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