Science and Math

Which of the following is NOT a valid indentifier (i.e. CANNOT be used asa name for a variable)

• BRAVEHEART

• 12 monkeys

• a_few_good_men

• I Don't Know

The name for the attractive force between the mass of Earth and the mass of objects on Earth is?

• weight

• gravity

• fraction

• balanced forces

A foot is about 30cm. A basketball court is 50 ft wide. How many cm wide is this?

• 30×50=1500 cm

• 30×50=1600 cm

• 30×50=1500 ft

• 30×50=1600 ft

A sailfish can swim at a speed of 30 meters per second. How far could it travel in 15 seconds at this speed?

• 30×15=450 meters

• 30×15=450 seconds

• 30×15=452 meters

• 30×15=452 seconds

The cruising speed of a jumbo jet is about 900 km per hour. How far could it travle in 2 hours?

• 900×2= 1,800 km per hour

• 900×2=1,900 km per hour

• 900×2=1,100 km per hour

• 900×2= 1,200 km per hour 

There is 0.7mg of iron in artichoke. How many grams of iron in 2 artichoke?

• 0.7×2=1.4mg of iron

• 0.7×2=14mg of iron

• 2×0.7=1.4mg of iron

• 2×0.7=14mg of iron

A bottle holds 1/2 pint of liquid. How many would 5 bottles hold?

• 1/2×5=2 1/2 pint

• 1/2×5=5 1/2 pint

• 5×1/2=2 1/2 pint

• 5×1/2 = 5 1/2

How many seconds in 5 minutes

• 60×5=300 seconds

• 60×5=345 seconds

• 5×60=300 seconds

• 5×60=345 seconds

An athletics track is 400m long. If I ran 3 times round the track, how far would that be?

• 400×3=1,200 m

• 400×3=1,220 m

• 3×400=1,200 m

• 3×400=1,220 m

A cruise ship travels at 25 miles per hour. How many hours will it take to make a 100 mile journey?

• 100 ÷25= 4 hours

• 100 ÷25= 3 hours

• 25 ÷100= 4 hours

• 25 ÷100=3 hours